jQuery(document).ready(function() {

	// Open every link with a rel="external" in a new window.
	jQuery('a[rel=external]').attr('target', '_blank');

	// display watermarks for the login form
	// they are placed here because they have to be replaced on all pages
	jQuery.watermark.className = 'watermark';
	jQuery('input#login-email').watermark( __('E-mail'));

	// handle watermarks differently in Opera since it ruins tab/form order
	if (navigator.appName.indexOf('Opera') != -1) {
		jQuery('input#login-password').addClass('watermark').val(__('Password')).focus(function () {
			jQuery(this).val('');
		});
	} else {
		jQuery('input#login-password').watermark(__('Password'));
	}

	// fade in errors and messages
	jQuery('p.success').fadeIn(1000);
	jQuery('p.error').fadeIn(1000);

	// settings for colorbox
	jQuery.fn.colorbox.settings.iframe = true;
	jQuery.fn.colorbox.settings.resize = true;
	jQuery.fn.colorbox.settings.width = 700;
	jQuery.fn.colorbox.settings.height = 600;
	jQuery.fn.colorbox.settings.overlayClose = true;
	jQuery.fn.colorbox.settings.opacity = 0.6;
	jQuery.fn.colorbox.settings.close = '';
	jQuery.fn.colorbox.settings.transition = 'none';

	jQuery('a.colorbox').colorbox();
	jQuery('a.reloadparent').bind('click', null, reloadParent);

	if (typeof fullscreen == 'function') {
		jQuery('a.fullscreen').fullscreen();
	}

	// process all queued events when the DOM is ready
	jQuery(init_queue).each(function () { this(); });

});

/* START WATERMARK FUNCTIONS */

// display watermarks on the signup page
function watermarkSignup()
{
	jQuery('input#signup-email').watermark(__('E-mail'));

	// handle watermarks differently in Opera since it ruins tab/form order
	if (navigator.appName.indexOf('Opera') != -1) {
		jQuery('input#signup-password').addClass('watermark').val(__('Password')).focus(function () {
			jQuery(this).val('');
		});
	} else {
		jQuery('input#signup-password').watermark(__('Password'));
	}

	// handle watermarks differently in Opera since it ruins tab/form order
	if (navigator.appName.indexOf('Opera') != -1) {
		jQuery('input#signup-password2').addClass('watermark').val(__('Repeat password')).focus(function () {
			jQuery(this).val('');
		});
	} else {
		jQuery('input#signup-password2').watermark(__('Repeat password'));
	}
}

// display watermarks on password reset screen
function watermarkPasswordReset()
{
	jQuery('input#reset-email').watermark(__('E-mail'));
}

// display watermark on profile page
function watermarkProfile()
{
	jQuery('input#startnewsubject').watermark(__('Enter the name of the course or an invitation code'));
}

// display watermark on profile page
function watermarkISBN()
{
	jQuery('input#isbn_search').watermark( __('Enter ISBN-10 or ISBN-13 number'));
}

function watermarkToctree()
{
	// set watermarks for this part
	jQuery('input#toc_toc_no').watermark('1.2.5');
	jQuery('input#toc_toc_title').watermark(__('The history of E-learning'));

	// the first text input has to be watermarked
	jQuery('#navigation input:text').each(function(i, element) {
		if (!jQuery(element).hasClass('disabled') && jQuery(element).val() == '') {
			jQuery(element).watermark('If there are no (sub)chapters or paragraph headers, please continue.');
			return false;
		}
	});

}

/* END WATERMARK FUNCTIONS */

// helper functions for the spinner
function startSpinner(spinner_id)
{
		if (typeof spinner_id != 'undefined') {
			jQuery('img#' + spinner_id).show();
		} else {
			jQuery('img.spinner').show();
		}
		jQuery('body').css('cursor', 'wait');
}

function stopSpinner(spinner_id)
{
		if (typeof spinner_id != 'undefined') {
			jQuery('img#' + spinner_id).hide();
		} else {
			jQuery('img.spinner').hide();
		}
		jQuery('body').css('cursor', 'auto');
}


/**
 *  display the TOC tree widget. Default state is hidden and auto-collapsed
 *
 *  @param: toc_no string, current toc_no
 *  @param: disable, text inputs editable or not
 */
function showTocTree(toc_no, disable)
{
	jQuery('#navigation').treeview({
			collapsed: true,
			unique: true
		});

	// if we received a toc_no, we will disable the parts of the tree that are not
	// below the specified toc_no
	if (disable || typeof toc_no != 'undefined' && toc_no !== '') {

		var toc_base;

		toc_base = toc_no.substr(0, toc_no.indexOf('.'));

		jQuery('#navigation li').each(function() {

			var classes = jQuery(this).attr('class');

			// open correct nodes below current node
			if (classes.indexOf('toc_' + toc_base) != -1) {

				// work around a treeview bug to properly display the - icon
				jQuery(this).children('div.open-hitarea').removeClass('expandable-hitarea').addClass('collapsable-hitarea');

				// background color for currently active nodes
				jQuery(this).children(':text').addClass('current');
			}

			// display tooltip for '+' icon
			// node number
			var node = classes.match("toc_([0-9.]+).");
			node = node[1];
			var text = __('Add more chapters/paragraphs to ') + node;
			var tooltip = '<a href="#" class="tooltip" onclick="javascript:return false;" title="' + text + '">&nbsp;</a>';
			jQuery(this).children('div.expandable-hitarea').html(tooltip);

			// if the source is locked, chapters can't be edited anymore.
			if (disable) {
				jQuery(this).children('input:text').attr('readonly', 'readonly').addClass('disabled');
			}

			// this is not the part of the tree we want to open; disable it
			// workaround to distinguish eg. 'toc_1 ' and 'toc_10 '
			if (!disable && classes.indexOf('toc_' + toc_no + '.') == -1) {

				jQuery(this).children('input:text').attr('readonly', 'readonly').addClass('disabled');
				jQuery(this).children(':checkbox').hide();
			}
		});
	}

	jQuery('#navigation').show();
	watermarkToctree();

	if (!disable) {

		// click handler for 'more' buttons
		// appends N dummy items
		jQuery('#navigation li.last a').die();
		jQuery('#navigation li.last a').live('click', function(event) {
			event.preventDefault();
			addBlankTocFields(jQuery(this));
		});


		// enable edit title link
		jQuery('#navigation a.editlink').die();
		jQuery('#navigation a.editlink').live('click', function(event) {

			event.preventDefault();

			var classes = jQuery(this).attr('class');
			var node = classes.match("edit_([0-9(.)?]+)");
			node = node[1];

			// open correct nodes below current node
			jQuery('#toc_description_' + node).removeClass('disabled');
			jQuery('#toc_description_' + node).removeAttr('readonly');
		});


		// mouseover edit/start links for filled chapters
		jQuery('#navigation input.toc_description').die();
		jQuery('#navigation input.toc_description').live('mouseover', function(event) {

			// hide previously displayed hover menus
			jQuery('#navigation .quicknav').each(function(i, elm) {
				jQuery(elm).hide();
			});

			// enable current item
			jQuery(this).siblings('.quicknav').show();
		});
		
		// enable start title link
		jQuery('#navigation a.startlink').die();
		jQuery('#navigation a.startlink').live('click', function(event) {

			event.preventDefault();

			var href = jQuery(this).attr('href');
			
			jQuery.get(href, { time: new Date().getTime() }, function(data) {
				window.parent.jQuery('#studyContainer').html(data);
				parent.jQuery.fn.colorbox.close();
			});
		});
	}

}

/**
 *  Gets the content of an Url and places it in the target
 */

function ajaxGet(url, targetId)
{
	startSpinner();

	jQuery.get(url, { time: new Date().getTime() }, function(data) {
		stopSpinner();
		jQuery('#' + targetId).html(data);
	});

	return false;
}


function addUpdateLinks(update_links_url)
{
	jQuery.get(update_links_url, { time: new Date().getTime() }, function(data) {
		parent.jQuery('#q-info').html(data);

		// show number of available questions in the QA step
		displayAvailableQuestions();
	});


	stopSpinner();
}

function removeUpdateLinks()
{
	jQuery('#q-info').empty();
}

// saves selected answers in the 'show questions' lightbox
function saveSelectedQuestions(parent_load_url)
{
  jQuery('#savequestions').click(function() {

	startSpinner();
	var postData = [];

	// gather selected questions
	jQuery('input[type=hidden]').each(function(i, elm) {

	  if (jQuery(elm).attr('name') == 'question[]' && jQuery(elm).attr('value') !== '') {
		var tmp = {};
		tmp.name = jQuery(elm).attr('name');
		tmp.value = jQuery(elm).attr('value');
		postData.push(tmp);
	  }
	});

	// gather selected answers
	jQuery('.answer_selected').each(function(i, elm) {
	  var tmp = {};
	  tmp.name = 'answer[]';
	  tmp.value = jQuery(elm).attr('id');
	  postData.push(tmp);
	});


	// gather newly added answers
	jQuery('.new_answer').each(function(i, elm) {

	  var value = jQuery(elm).val();

	  if (typeof value != 'undefined' && value !== '') {
		var tmp = {};
		question_id = jQuery(elm).attr('id').substr(12);
		tmp.name = 'new_answer[' + question_id + ']';
		tmp.value = value;
		postData.push(tmp);
	  }
	});



	// gather newly added answers checkboxes
	jQuery('.new_answer_checkbox').each(function(i, elm) {

	  var checked = jQuery(elm).attr('checked');


	  if (checked) {

		var tmp = {};
		new_answer_checkbox_id = jQuery(elm).attr('id');
		question_id = new_answer_checkbox_id.substr(20);

		tmp.name = 'new_answer_checkbox[]';
		tmp.value = question_id;
		postData.push(tmp);
	  }
	});

	// dunno why, but apparently we need this
	jQuery('.answer_selected').each(function(i, elm) {
	  var tmp = {};
	  question_id = jQuery(elm).attr('name').substr(9);
	  tmp.name = 'selected_answer[' + question_id + ']';
	  tmp.value = jQuery(elm).attr('id');
	  postData.push(tmp);
	});

	jQuery.post(jQuery('#tocitemquestions').attr('action'), postData, function(data) {

		//jQuery('#ajaxresult').html(data);

		stopSpinner();
		jQuery.get(parent_load_url, { time: new Date().getTime()}, function(data) {

		  parent.jQuery('#studyContainer').html(data);
		  parent.jQuery.fn.colorbox.close();
		});
	});

	jQuery.get(parent_load_url, { time: new Date().getTime()}, function(data) {

	  parent.jQuery('#studyContainer').html(data);
	  parent.jQuery.fn.colorbox.close();
	});

  });

  return false;
}


function addQuestionToggle()
{
	jQuery('h3.question a').click(function(event) {

		event.preventDefault();
		jQuery('.answers').hide();

		question = jQuery(this).parent();
		question_id = question.attr('id').substr(2);
		answer_id = 'a_' + question_id;

		jQuery('#' + answer_id).slideToggle('slow');
	});

	jQuery('.question_checkbox').click(function(event) {

		question_id = jQuery(this).attr('id').substr(18);
		answer_id = 'a_' + question_id;
		jQuery('.answers').hide();
		jQuery('#' + answer_id).slideToggle('slow');

		if (!jQuery(this).attr('checked')) {
				name = 'answer_q_' + question_id;
				jQuery('p[name=' + name + ']').removeClass('selected');
				jQuery('#new_answers_' + question_id).removeClass('answer-selected');
		}
	});
}

// select or deselect an answer in 'show questions' lightbox for use
function addAnswerSelect()
{
  // deal with answers that are already available
  jQuery('.selectable_answer').click(function() {

	// detect toggle on current answer
	if (!jQuery(this).hasClass('answer_selected')) {

	  // disable all previous answers if we select a new answer
	  jQuery(this).parent().children('.selectable_answer').each(function(i, elm) {
		jQuery(elm).removeClass('answer_selected');
	  });
	}

	// toggle current answer so we can deselect it
	jQuery(this).toggleClass('answer_selected');

	// if current item is selected, we can set the checkbox for this question
	// eg. we want to use this question
	var question_id = jQuery(this).attr('name').substr(9);

	//deselect the new answer checkbox for the current question
	jQuery('#' + 'new_answer_checkbox_' + question_id).attr('checked', '');

	if (jQuery(this).hasClass('answer_selected')) {
	  jQuery('#question_checkbox_' + question_id).attr('value', question_id);
	} else {
	  jQuery('#question_checkbox_' + question_id).attr('value', '');
	}
  });

  // deal with new answer box
  jQuery('.new_answer').click(function() {

	new_answer_id = jQuery(this).attr('id');
	question_id = new_answer_id.substr(12);

	jQuery('p[name=' + 'answer_q_' + question_id  + ']').removeClass('selected');
	jQuery(this).addClass('answer-selected');

	jQuery('#question_checkbox_' + question_id).attr('checked', 'checked');
  });


  jQuery('.new_answer_checkbox').click(function() {

	// disable all previous answers if we select a new answer
	jQuery('.selectable_answer').each(function(i, elm) {
	  jQuery(elm).removeClass('answer_selected');
	});

	new_answer_id = jQuery(this).attr('id');
	question_id = new_answer_id.substr(20);
	//jQuery('#question_checkbox_' + question_id).attr('value', question_id);
	//alert(question_id);
  });
}

/**
 *  binds an onclick event to the close button and overlay of the colorbox.
 *  The event reloads the parent.
 */
function reloadParent()
{
	jQuery('#cboxClose, #cboxOverlay').click(function(){
		// do it like this to prevent reposts
		window.parent.location = window.parent.location;
	});
}

// if the window is unloaded, reload the parent
function reloadParentOnUnload()
{
	jQuery(document).ready(function(){
		jQuery(window).bind('unload', function() {
				window.parent.location = window.parent.location;
		});
	});
}

function deleteTocItemStudyUnit(del_tocitem_studyunit_url, studyunit_id) {

	jQuery('.delete_tocitem_studyunit').die();
	jQuery('.delete_tocitem_studyunit').live('click', function(event) {
		// determine correct source ID (strip out the 'source_' prefix)
		id = jQuery(this).attr('id');
		id = id.substring(10, id.length);

		// delete item from studyunit table and alter right screen column
		url = del_tocitem_studyunit_url + '?studyunit_id=' + studyunit_id + '&tocitem_studyunit_id=' + id;

		jQuery.ajax({
			url: url,
			success: function(html) {
				jQuery('#studyunit').empty();
				jQuery('#studyunit').append(html);
			}
		});

		// also refresh the TOC tree when we removed an item from our study unit
		// we want to see the checkbox unchecked
		toc_tree_url = 'studyunit/toctree';
		id = jQuery(this).attr('rel');
		url = toc_tree_url + '?source_id=' + id + '&studyunit_id=' + studyunit_id;

		var html = jQuery.ajax({
			url: url,
			async: false
		}).responseText;

		jQuery('#toctree').html(html);
		showTocTree();

		return false;
	});
}

function carouselSourceToc(toc_tree_url, studyunit_id)
{
	jQuery('a.carousel_source').die();
	jQuery('a.carousel_source').live('click', function(event) {

		startSpinner('spinner_caroussel');

		// reset all previously selected a.selecteds
		jQuery('#source-carousel li a').each(function(elm) {
			jQuery(this).removeClass('selected');
		});
		// make this item selected
		jQuery(this).addClass('selected');

		// determine correct source ID (strip out the 'source_' prefix)
		id = jQuery(this).attr('id');
		id = id.substring(7, id.length);

		url = toc_tree_url + '?source_id=' + id + '&studyunit_id=' + studyunit_id;

		var html = jQuery.ajax({
			url: url,
			async: false
		}).responseText;

		jQuery('#toctree').html(html);

		stopSpinner('spinner_caroussel');
		showTocTree();
	});
}

// rotate through our sources
function addSourceCarousel()
{
	// firstly, remember first item
	// we need this because the carousel screws up the order
	var first_item = jQuery('#source-carousel li a:first');

	jQuery('#source-carousel').jCarouselLite ({
		circular: true,
		visible: 6,
		btnPrev: '#caroussel_prev',
		btnNext: '#caroussel_next'
	});
}

/**
 *  toggle between isbn and user input when adding a source.
 */
function toggleAddSource(enable, disable)
{
	jQuery('#toggle' + enable).attr('checked', 'checked');
	jQuery('#toggle' + disable).removeAttr('checked');

	// enable
	jQuery('#opt' + enable + ' :input').each(function(i, element) {
		jQuery(element).removeAttr('disabled').removeClass('disabled');
	});

	// disable
	jQuery('#opt' + disable + ' :input').each(function(i, element) {
		jQuery(element).attr('disabled', 'disabled').addClass('disabled');
	});
}

// append blank TOC fields to our tree
function addBlankTocFields(clicked)
{
	 // remove 'last' class and 'more' link
	var parent = jQuery(clicked).parent();
	jQuery(parent).removeClass('last').find('a.link').remove();

	// our 'template' for new items
	var template = '<li class="closed toc_REPLACEME. CSS">REPLACEME ' +
	'<input id="toc_description_REPLACEME" class="text toc_description" type="text" value="" name="toc_description[REPLACEME]" /> ' +
	'<input id="toc_checkbox_REPLACEME" class="toc_checkbox" type="checkbox" value="REPLACEME" name="toc_checkbox[]" />' +
	'MORELINK ' +
	'</li>';

	// determine next toc_no position
	var toc_no = jQuery(clicked).attr('href');

	// strip off our anchor
	toc_no = toc_no.replace(/^.*#/, '');

	var parts = toc_no.split('.');
	var last = parseInt(parts.pop(), 10) + 1;
	var base = parts.join('.');

	// if we actually have a base node, we append the missing '.'
	if (base !== '') {
		base += '.';
	}

	// append N blank items
	var output = '';
	var new_toc_no;
	var i;

	for (i = last; i < (last + 5); i++) {
		new_toc_no = base + i;

		// replace all correct toc_no
		output += template.replace(/REPLACEME/g, new_toc_no);

		// also replace extra CSS and HTML (last node only)
		if (i == (last + 5) - 1) {
			output = output.replace('CSS', 'last');
			output = output.replace('MORELINK', '<br /><a href="#' + new_toc_no + '" class="link">' + __('More') + '</a>');
		} else {
			output = output.replace('CSS', '');
			output = output.replace('MORELINK', '');
		}
	}
	 // append our new fields to our element
	jQuery(parent).after(output);

	// append autocomplete to the new fields
	// we can't do this in the loop above because it will get added only once
	// and exit the loop
	var source_id = jQuery('input[name=source_id]').val();

	for (i = last; i < (last + 5); i++) {

		new_toc_no = base + i;
		jQuery('#toc_description_' + new_toc_no).autocomplete('ajax/gettocsuggestions', {
			matchContains: true,
			extraParams: {
				source_id: source_id,
				toc_no: toc_no
			}
		});
	}
}


// handle new TOC items only (no updates)
function addToc_Item()
{
	jQuery('#add_toc_item_btn').die();
	jQuery('#add_toc_item_btn').live('click', function(event) {

		event.preventDefault();
		startSpinner('spinner_addtoc');

		// check if we actually submitted watermarked data
		// if so, we clear our values and do a normal submit, triggering error messages
		if (jQuery('input#toc_toc_no').hasClass('watermark')) {
			jQuery('input#toc_toc_no').val('');
		}

		if (jQuery('input#toc_toc_title').hasClass('watermark')) {
			jQuery('input#toc_toc_title').val('');
		}

		jQuery('#add_toc_item_btn').attr('disabled', 'disabled');

		var postData = [];

		// text inputs and hidden
		jQuery('#add_toc_item_form :text, #add_toc_item_form input[type=hidden]').each(function(i, el) {
			var tmp = {};
			tmp.name = jQuery(el).attr('name');

			if (typeof tmp.name != 'undefined') {
				tmp.value = jQuery(el).val();

				if (tmp.value !== '') {
					postData.push(tmp);
				}
			}
		});

		// text inputs and hidden
		jQuery('#toc_items_form :text, #toc_items_form input[type=hidden]').each(function(i, el){
			if (!jQuery(el).hasClass('watermark')) {
				var tmp = {};
				tmp.name = jQuery(el).attr('name');

				if (typeof tmp.name != 'undefined') {
					tmp.value = jQuery(el).val();

					// store studyunit_id to refresh the studyunit tab
					if (tmp.name == 'studyunit_id') {
						studyunit_id = tmp.value;
					}

					if (tmp.value !== '') {

						postData.push(tmp);
					}
				}

				// checkboxes
				jQuery('#toc_items_form :checkbox').each(function(i, el) {

						if (jQuery(el).attr('checked')) {
							var tmp = {};
							tmp.name = jQuery(el).attr('name');

							if (typeof tmp.name !== 'undefined') {
								tmp.value = jQuery(el).val();

								if (tmp.value !== '') {
									postData.push(tmp);
								}
							}
						}
				});
			} else {
				jQuery(el).val('');
			}
		});

		// AJAX submit our formdata, save our updated TOC and return a new TOC tree
		jQuery.post(jQuery('#add_toc_item_form').attr('action'), postData, function(data) {

			stopSpinner('spinner_addtoc');

			toc_no_obj = {};
			toc_no_obj.name = 'toc_toc_no';
			toc_no_obj.value = jQuery('#toc_toc_no').attr('value');
			postData.push(toc_no_obj);

			toc_desc_obj = {};
			toc_desc_obj.name = 'toc_toc_title';
			toc_desc_obj.value = jQuery('#toc_toc_title').attr('value');
			postData.push(toc_desc_obj);

			jQuery('#studyContainer').html(data);
			jQuery('#add_toc_item_btn').removeAttr('disabled');
			showTocTree();

			jQuery('#toc_toc_no').attr('value', '');
			jQuery('#toc_toc_title').attr('value', '');
		});

		return false;
	});
}

//see http://docs.jquery.com/Frequently_Asked_Questions#How_do_I_select_an_element_that_has_weird_characters_in_its_ID.3F
function escape_id(myid)	{ return '#'+myid.replace(/:/g,"\\:").replace(/\./g,"\\.");}

function checkTocitems() {

	jQuery('.toc_description').live('click', function() {

		toc_description_id = jQuery(this).attr('id');
		toc_no = toc_description_id.substr(16);
		toc_checkbox_id = 'toc_checkbox_' + toc_no;
		toc_checkbox_id = escape_id(toc_checkbox_id);
		jQuery(toc_checkbox_id).attr('checked', 'checked');

/*
		//uncheck the previous checked checkboxes not having a value
		//in their corresponding toc_textfield
		jQuery('input[type=checkbox]').each(function() {
			if (jQuery(this).attr('checked')) {
				if (!jQuery(this).attr('value')) {
				}
			}
		});
*/
	});
}


// handle updates on the TOC tree
// optional 2nd arguments indicates if we're in the studyflow; behaviour depends on that
function addSave_Toc_Item_Listener(deletetocitemstudyunit_url, redirect)
{
	jQuery('#save_toc_items_btn').die();
	jQuery('#save_toc_items_btn').live('click', function(event) {

		event.preventDefault();

		jQuery('#save_toc_items_btn').attr('disabled', 'disabled');
		startSpinner('spinner_savetoc');

		var postData = [];
		var studyunit_id;

		// text inputs and hidden
		jQuery('#toc_items_form :text, #toc_items_form input[type=hidden]').each(function(i, el){
			if (!jQuery(el).hasClass('watermark')) {
				var tmp = {};
				tmp.name = jQuery(el).attr('name');

				if (typeof tmp.name != 'undefined') {
					tmp.value = jQuery(el).val();

					// store studyunit_id to refresh the studyunit tab
					if (tmp.name == 'studyunit_id') {
						studyunit_id = tmp.value;
					}

					if (tmp.value !== '') {
						postData.push(tmp);
					}
				}
			} else {
				jQuery(el).val('');
			}
		});

		// checkboxes
		jQuery('#toc_items_form :checkbox').each(function(i, el) {

				if (jQuery(el).attr('checked')) {
					var tmp = {};
					tmp.name = jQuery(el).attr('name');

					if (typeof tmp.name !== 'undefined') {
						tmp.value = jQuery(el).val();

						if (tmp.value !== '') {
							postData.push(tmp);
						}
					}
				}
		});

		// include the caller parameter in the post data
		// the action on the server won't return an updated
		// toctree if we're in the study flow because
		// this isn't displayed in the flow (save and close lightbox)
		if (redirect !== '') {

			obj = {};
			obj.name = 'caller';
			obj.value = 'study_flow';
			postData.push(obj);
		}


		// check if we actually submitted watermarked data
		// if so, we clear our values and do a normal submit, triggering error messages
		if (jQuery('input#toc_toc_no').hasClass('watermark')) {
			jQuery('input#toc_toc_no').val('');
		}

		if (jQuery('input#toc_toc_title').hasClass('watermark')) {
			jQuery('input#toc_toc_title').val('');
		}

		toc_no_obj = {};
		toc_no_obj.name = 'toc_toc_no';
		toc_no_obj.value = jQuery('#toc_toc_no').attr('value');
		postData.push(toc_no_obj);

		toc_desc_obj = {};
		toc_desc_obj.name = 'toc_toc_title';
		toc_desc_obj.value = jQuery('#toc_toc_title').attr('value');
		postData.push(toc_desc_obj);

		// AJAX submit our formdata, save our updated TOC and return a new TOC tree
		jQuery.post(jQuery('#toc_items_form').attr('action'), postData, function(data) {

			stopSpinner('spinner_savetoc');

			// if we're in the studyflow (we have a redirect)
			// we want to close our TOC tree and redirect the user to the next step
			if (redirect !== '') {

				jQuery('#save_toc_items_btn').removeAttr('disabled');

				// disable display of TOC tree if we're redirecting to improve speed a bit
				// showTocTree();

				jQuery.get(redirect, { time: new Date().getTime()}, function(data) {
					parent.jQuery('#studyContainer').html(data);
					parent.jQuery.fn.colorbox.close();
				});

			} else {

				jQuery('#studyContainer').html(data);
				jQuery('#save_toc_items_btn').removeAttr('disabled');

				// refresh studyunit tab
				jQuery.get(deletetocitemstudyunit_url + '?studyunit_id=' + studyunit_id, { time: new Date().getTime()} ,function(data){
					jQuery('#studyunit').html(data);
					jQuery('#items').sortable();
					showTocTree();
				});

				stopSpinner();
				return false;
			}
		});
	});
}

function getTocIndex(start_url){
	addSave_Toc_Item_Listener();

	jQuery.get(start_url, { time: new Date().getTime()} , function(data){
		jQuery('#studyContainer').html(data);
	});

	return false;
}

/**
 *  Delete a Toc_Item
 *
 *  tocItemId = id of the tocItem in the database
 *  studyUnitId = id of node in the mindmap
 */
function deleteTocItem(tocItemId, studyUnitId)
{
	startSpinner();

	jQuery.post('toc/del', { tocitem_id: tocItemId},
		function(data) {
			stopSpinner();
			jQuery('#studyContainer').html(data);
			removeNode(studyUnitId);

			//save the xml to the filesystem
			saveXml();
		});
}

/*********** StudyUnitLanguage **************/

/**
 *  Add listener to the button to set the StudyUnitLanguage
 */
function saveStudyUnitLanguage()
{
	jQuery('#save_language_btn').die();
	jQuery('#save_language_btn').live('click', function(event){

		jQuery('#save_language_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];
		jQuery('#save_language_form :input').each(function(i, el){
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);
		});

		jQuery.post(jQuery('#save_language_form').attr('action'), postData,
			function(data) {

				stopSpinner();

				// remove handler
				jQuery('#save_language_btn').die('click');

				jQuery('#studyContainer').html(data);
			});

		return false;
	});
}

/*********** Expectation **************/

/**
 *  Add listener to the button to add a new Expectation
 */
function saveExpectation()
{
	jQuery('#save_expectation_btn').die();
	jQuery('#save_expectation_btn').live('click', function(event){

		jQuery('#save_expectation_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];
		var expectationText = '';

		jQuery('#add_expectation_form :input').each(function(i, el) {
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);

				// get the text for the expectation cloud.
				if (this.type == 'textarea') {
					expectationText = jQuery(el).val();
				}
		});

		jQuery.post(jQuery('#add_expectation_form').attr('action'), postData,
			function(data) {

				// first get the info for the expectation cloud.
				showExpectation(jQuery('#tocItemStudyUnitId').val(), expectationText);

				stopSpinner();

				// remove handler
				jQuery('#save_expectation_btn').die('click');

				// insert the new html
				jQuery('#studyContainer').html(data);
			});

		return false;
	});
}

/*********** Relation **************/

/**
 *  Add listener to the button to add a new Relation
 */
function saveRelation()
{
	jQuery('#save_relation_btn').die();
	jQuery('#save_relation_btn').live('click', function(event){

		jQuery('#save_relation_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];
		jQuery('#add_relation_form :input').each(function(i, el){
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);
		});

		jQuery.post(jQuery('#add_relation_form').attr('action'), postData,
			function(data){

				stopSpinner();

				// remove handler
				jQuery('#save_expectation_btn').die('click');

				jQuery('#studyContainer').html(data);
			});

		return false;
	});
}

/*********** Question **************/

/**
 *  Add listener to the button to add a new Question/Answer
 */
function saveQuestion()
{
	//jQuery('#save_question_btn').die();
	//jQuery('#save_question_btn').live('click', function(event){

		jQuery('#save_question_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];
		jQuery('#add_question_form :input').each(function(i, el){
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);
		});

		jQuery.post(jQuery('#add_question_form').attr('action'), postData,
			function(data) {

				stopSpinner();

				// remove handler
				jQuery('#save_question_btn').die('click');

				jQuery('#studyContainer').html(data);
			});

		return false;
	//});
}

function checkQuestion(url)
{
	var content = true;
	jQuery('#add_question_form textarea').each(function(i, el) {
		if (jQuery(el).val() !== '') {
			content = false;
		}
	});

	if (!content) {
		jQuery('#questiondialog').dialog('open');
	} else {
		saveXml();
		ajaxGet(url, 'studyContainer'); removeUpdateLinks(); saveXml();
	}

	return false;
}

function checkQuestionDialog(url)
{
	var yes = __('Yes');
	var cancel = __('Cancel');

	var conf, buttons;

	conf = [
		{
			name: __('Yes'),
			callback: function () {
				ajaxGet(url, 'studyContainer'); removeUpdateLinks(); saveXml();
				jQuery(this).dialog('close');
			}
		},
		{
			name: __('Cancel'),
			callback: function() {
				jQuery(this).dialog('close');
			}
		}
	];

	buttons = {};

	for (var i = 0; i < conf.length; i++) {
		buttons[conf[i].name] = conf[i].callback;
	}

	jQuery('#questiondialog').dialog({
		autoOpen: false,
		bgiframe: true,
		resizable: false,
		height: 140,
		modal: true,
		overlay: {
			backgroundColor: '#000',
			opacity: 0.5
		},
		buttons: buttons
	});
}

/*********** Note **************/

/**
 *  save Note (belonging to TocItem_StudyUnit)
 */
function saveNote()
{
		jQuery('#save_note_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];
		var expectationText = '';

		jQuery('#add_note_form :input').each(function(i, el) {
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);
		});

		jQuery.post(jQuery('#add_note_form').attr('action'), postData,
			function(data) {

				stopSpinner();

				// remove handler
				jQuery('#save_note_btn').die('click');

				// insert the new html
				jQuery('#studyContainer').html(data);
			});

		return false;
}

function dontSplit()
{
	jQuery.get('expectation', { time: new Date().getTime()} , function(data){
			jQuery('#studyContainer').html(data);
		});
}

/**
 *  Create words that are clickable
 */
function createKeywords(question_data, answer_data)
{
	// unbind any previous handlers we might have on the keywords
	// we can't do this in the plugin because we need the handler twice
	// and a die(); live(); combo will result in events for the last element only
	jQuery('#question').find('span').die();
	jQuery('#answer').find('span').die();

	jQuery('#question').keywords({}, question_data);
	jQuery('#answer').keywords({}, answer_data);
}

/**
 *
 */
function saveKeywords()
{
	jQuery('#save_keywords_btn').die();
	jQuery('#save_keywords_btn').live('click', function(event){

		event.preventDefault();

		jQuery('#save_keywords_btn').attr('disabled', 'disabled');
		startSpinner();

		var postData = [];

		var tmp = {};
		tmp.name = 'tocitemquestion_id';
		tmp.value = jQuery('#question_id').val();
		postData.push(tmp);

		tmp = {};
		tmp.name = 'tocitemanswer_id';
		tmp.value = jQuery('#answer_id').val();
		postData.push(tmp);

		tmp = {};
		tmp.name = 'question_keywords';
		tmp.value = jQuery('#question').getkeywords();
		postData.push(tmp);

		tmp = {};
		tmp.name = 'answer_keywords';
		tmp.value = jQuery('#answer').getkeywords();
		postData.push(tmp);

		jQuery.post(jQuery('#save_keyword_form').attr('action'), postData,
			function(data) {

				stopSpinner();

				// remove handler
				jQuery('#save_keywords_btn').die('click');

				jQuery('#studyContainer').html(data);
				createKeywords(question_data, answer_data);
			});

		return false;
	});
}

function keywordToMindmap(elementId)
{
	jQuery('#keywords li').click(function(event) {

		jQuery('#keyworderror').hide();

		//var selectedNode = getNode();
		var selectedNode = thisMovie('mindmap').getNode();

		if (selectedNode) {

			word = this.innerHTML;
			keywordId = 'K_' + this.id;

			addNode(keywordId, selectedNode.id, word.replace(/\\/, ''));
			jQuery(this).remove();

			saveXml();
		} else {
			jQuery('#keyworderror').show();
		}
	});
}

/**
 *  Hides keywords in an answer, and shows them when given the right answer.
 */
function createRehearsal()
{
	// hide the keywords
	jQuery('#rehearsal').rehearsals(data);
	// check the input of the user
	jQuery('#keyword').checkInput(data, jQuery('#rehearsal'), finishedPos);

	jQuery('#rehearsal').show();
}

function getHintRehearsal()
{
	// first get the keyword which are still hidden.
	// in the array 'finishedPos' are the keywords are that are already filled in.
	if (typeof data.keywords != 'undefined' && jQuery('#keywordsLeft').val() > 0) {
		var whatsLeft = [];

		for (var i = 0; i < data.keywords.length; i++) {

			if (jQuery.inArray(data.keywords[i].pos, finishedPos) == -1){
				whatsLeft.push(data.keywords[i]);
			}
		}

		var randHint = whatsLeft[Math.floor(Math.random() * whatsLeft.length)];

		// show keyword
		jQuery('#rehearsal').html(showKeyword(jQuery('#rehearsal').text(),randHint.pos, randHint.word));

		// add effect to the keyword
		jQuery('#k_' + randHint.pos).fadeIn().fadeOut().fadeIn().fadeOut().fadeIn();

		// lower the number of keywords left to fill in
		if (jQuery('#keywordsLeft').val() > 1) {
			jQuery('#keywordsLeft').val(jQuery('#keywordsLeft').val() - 1);
		} else {
			jQuery('#keywordsLeft').val(0);
		}

		// add this word to the finished positions array
		finishedPos.push(randHint.pos);

		if (jQuery('#keywordsLeft').val() == 0) {
			jQuery('#getHintButton').hide();
			jQuery('#giveUpButton').hide();
			jQuery('#inputContainer').hide();
			jQuery('#wrongButton').show();
		}
	}
}

function giveUpRehearsal()
{
	if (typeof data.keywords != 'undefined') {
		for (var i = 0; i < data.keywords.length; i++) {

			if (jQuery.inArray(data.keywords[i].pos, finishedPos) == -1) {
				// show keyword

				jQuery('#rehearsal').html(showKeyword(jQuery('#rehearsal').text(), data.keywords[i].pos, data.keywords[i].word));

				// lower the number of keywords left to fill in.
				if (jQuery('#keywordsLeft').val() > 1) {
					jQuery('#keywordsLeft').val(jQuery('#keywordsLeft').val() - 1);
				} else {
					jQuery('#keywordsLeft').val(0);
				}

				// add this word to the finished positions array
				finishedPos.push(data.keywords[i].pos);
			}
		}

		if (jQuery('#keywordsLeft').val() == 0) {
			jQuery('#getHintButton').hide();
			jQuery('#giveUpButton').hide();
			jQuery('#inputContainer').hide();
			jQuery('#wrongButton').show();
		}
	}
}

// if a user presses on Enter when in the ISBN field, the form gets submitted
function handleISBNSubmit()
{
	jQuery('#isbn').keypress(function(e) {
		if (e.which == 13) {
			jQuery('#isbnsubmit').trigger('click');
			e.preventDefault();
		}
	});
}

/**
 * processes the Json when a search for Source is done.
 *
 */
function processSourceSearch()
{
	// reset all variables
	jQuery('#id').val('');
	jQuery('#isbn_name').val('');
	jQuery('#isbn').val('');
	jQuery('#isbn13').val('');
	jQuery('#isbn_author').val('');
	jQuery('#isbn_version').val('');
	jQuery('#image').val('');
	jQuery('#cover').attr('src', 'images/default_cover.jpg');
	jQuery('#isbnsource-submit').addClass('hide');
	jQuery('#textTitle').html('');
	jQuery('#textAuthor').html('');
	jQuery('#textVersion').html('');

	// if we found a non-empty result in div#ajax_result, we can display data
	if (jQuery('#ajax_result').html() != '[]' ) {

		var data = eval('(' + jQuery('#ajax_result').html() + ')');

		if (data.name) {
			jQuery('#id').val(data.id);
			jQuery('#isbnsource-submit').removeClass('hide');
		} else {
			jQuery('#id').val('');
			jQuery('#cover').attr('src', 'images/default_cover.jpg');
			jQuery('#isbnsource-submit').addClass('hide');
		}

		// fill spans
		var shorttitle = data.name;
		if (shorttitle.length > 80) {
			shorttitle = shorttitle.substr(0, 76) + ' ...';
		}

		jQuery('#textTitle').html(shorttitle);
		jQuery('#textAuthor').html(data.author_text);
		jQuery('#textVersion').html(data.publisher_text);

		jQuery('#isbn').val(data.isbn);
		jQuery('#isbn13').val(data.isbn13);

		// fill hidden fields when searched for ISBN
		jQuery('#isbn_name').val(data.name);
		jQuery('#isbn_author').val(data.author_text);
		jQuery('#isbn_version').val(data.publisher_text);

		if (data.cover !== '') {
			jQuery('#cover').attr('src', data.cover);
			jQuery('#image').val(data.cover);
		}

	} else {
		// no data found; reset everything and display default cover image
		jQuery('#id').val('');
		jQuery('#cover').attr('src', 'images/default_cover.jpg');
		jQuery('#image').val('');
		jQuery('#isbnsource-submit').addClass('hide');
	}
}


function addSource(add_source_url, subject_id, source_url, subject_sources_url)
{
	jQuery('#isbn-searchform').submit(function(event) {

		event.preventDefault();

		// make sure our radio button is set
		 if (jQuery('#toggle0').attr('checked') != true) {
			return;
		 }

		startSpinner();

		source_url += '?subject_id=' + subject_id;
		subject_sources_url += '?subject_id=' + subject_id;

		add_source_url += '?subject_id=' + subject_id;
		add_source_url += '&search=' + jQuery('#isbn').val();

		jQuery.get(add_source_url, function() {

			jQuery.get(subject_sources_url, function(data) {
				jQuery('#subjectsources').html(data);
			});
		});

		stopSpinner();
	});
}


// Handle language switch on the top right
function changeLanguage()
{

	// because chrome2 doesn't properly submit the form we have to hack it a bit
	jQuery('#lang').submit(function(event) {

		// chrome(2) specific hack, because it doesn't want to properly submit our form (submit action gets triggered but not executed)
		if ((navigator.userAgent.toLowerCase().indexOf('chrome') > -1)) {


			var location = window.location.href;

			var target = jQuery('#language').val();
			var source = (target == 'en' ? '/nl/' : '/en/');
			target = '/' + target + '/';

			location = location.replace(source, target);
			window.location=location;
			return false;
		}
	});

	jQuery('#language').change(function() {
		jQuery(this).closest('form').submit();
	});
}

/*
 * START AUTOCOMPLETE FUNCTIONS
 */

// reset institution and degree if we change the country on the profile/confirmation page
function resetAutocompleteProfile()
{
	jQuery('#profile-country').change(function() {
		jQuery('#profile-institution').val('').flushCache();
		jQuery('#profile-education-level').val('').flushCache();
	});
}

// autocomplete the degrees (user screen)
function ajaxAutocompleteDegrees(url)
{
	jQuery('#profile-education-level').autocomplete(url, {
		matchContains: true,
		extraParams: {
			country: function() { return jQuery('#profile-country').val(); }
		}
	});
}

// autocomplete the institutions (user screen)
function ajaxAutocompleteInstitutions(url)
{
	jQuery('#profile-institution').autocomplete(url, {
		matchContains: true,
		extraParams: {
			country: function() { return jQuery('#profile-country').val(); }
		}
	});
}

// autocomplete the studies (user screen)
function ajaxAutocompleteStudies(url)
{
	jQuery('#profile-study1').autocomplete(url, {
		matchContains: true,
		extraParams: {
			institution: function() { return jQuery('#profile-institution').val(); }
		}
	});

	jQuery('#profile-study2').autocomplete(url, {
		matchContains: true,
		extraParams: {
			institution: function() { return jQuery('#profile-institution').val(); }
		}
	});

	jQuery('#profile-study3').autocomplete(url, {
		matchContains: true,
		extraParams: {
			institution: function() { return jQuery('#profile-institution').val(); }
		}
	});
}

// autocomplete the book titles
function ajaxAutocompleteBooktitles(url)
{
	jQuery('#name').autocomplete(url, {matchContains: true});
}

// autocomplete the book authors
function ajaxAutocompleteBookauthors(url)
{
	jQuery('#author').autocomplete(url, {
		matchContains: true,
		extraParams: {
			title: function() { return jQuery('#name').val(); }
		}
	});
}

// autocomplete the book versions
function ajaxAutocompleteBookversions(url)
{
	jQuery('#version').autocomplete(url, {
		matchContains: true,
		extraParams: {
			title: function() { return jQuery('#name').val(); }
		}
	});
}

// autocomplete the TOC suggestions
function ajaxAutocompleteTocSuggestions(url)
{
	var toc_no;
	var source_id = jQuery('input[name=source_id]').val();

	// add autocomplete to all TOC nodes
	jQuery('#navigation li input:text').each(function() {

		toc_no = jQuery(this).siblings('input:checkbox').val();

		jQuery(this).autocomplete(url, {
			matchContains: true,
			extraParams: {
				source_id: source_id,
				toc_no: toc_no
			}
		});
	});
}


/*
 * END AUTOCOMPLETE FUNCTIONS
 */


// retrieve base href, is used in the movie players
function getBaseHref()
{
		var thebase = document.getElementsByTagName('base');
		return thebase[0].href;
}

// sort the items in the study unit
function storeStudyUnitOrder(studyunit_url, subject_id, studyunit_id )
{
	jQuery('#items').sortable();

	jQuery('#return').click(function(event) {

		startSpinner();

		var serialized_items = jQuery('#items').sortable('serialize');

		url =
			studyunit_url +
			'?studyunit_id=' + studyunit_id +
			'&subject_id=' + subject_id;

		jQuery.ajax({
			type: 'POST',
			url: url,
			data: serialized_items
		});

		if (jQuery('p.success').length) {
			jQuery('p.success').fadeOut().wrap(__('Settings saved')).fadeIn(1000);
		} else {
			jQuery('div#msg').wrap('<p class="success hide">' + __('Settings saved') + '</p>');
			jQuery('p.success').fadeIn(1000);
		}

		stopSpinner();
		event.preventDefault();
	});
}

// sort the items in the study unit
function storeStudyUnitItemOrder(studyunit_url, subject_id, studyunit_id )
{
	jQuery('#items').sortable();

	jQuery('#return').click(function(event) {

		startSpinner();

		var serialized_items = jQuery('#items').sortable('serialize');

		url =
			studyunit_url +
			'?studyunit_id=' + studyunit_id +
			'&subject_id=' + subject_id;

		jQuery.ajax({
			type: 'POST',
			url: url,
			data: serialized_items
		});


		stopSpinner();
		event.preventDefault();

		// trigger the hidden href to start studying in fullscreen mode
		window.location = jQuery('#startstudybutton').attr('href');
	});
}

// display the intro movie on the homepage
function displayMovie(image, video)
{
		var basehref = getBaseHref();
		var flashvars = {};
		var params = {};

		params.allowfullscreen = 'true';
		params.allowscriptaccess = 'always';
		params.wmode = 'transparent';

		if (image != '') {
			flashvars.image = basehref + image;
		}

		flashvars.file = basehref + video;

		flashvars.backcolor = 'e6e6e6';
		flashvars.screencolor = 'ffffff';
		flashvars.controlbar = 'over';

		swfobject.embedSWF('swf/player.swf', 'movie', '465', '261', '9.0.0', 'swf/expressInstall.swf', flashvars, params);
}

// helper function for the timer bar
function leadingZero(n) {
	return (n !== null && n < 10 && n >= 0 ? '0' : '') + n;
}

// display timer bar on study page
function startTimer(studyinterval, pauseinterval, stopinterval, concentrationinterval, skip_studytips)
{
	// times in seconds
	var inactivity_counter = 0;

	// appropriately set pause and stopinterval
	pauseinterval += studyinterval;

	// detect inactivity with keyups and mousedowns
	jQuery(document).keyup(function(event) {
		inactivity_counter = 0;
	});

	jQuery(document).mousedown(function(event) {
		inactivity_counter = 0;
	});

	// display progress bar
	jQuery('#progressbar').progressbar();

	// init time interval bar below
	var centerminutes = leadingZero(Math.floor((stopinterval / 2) / 60));
	var stopminutes = leadingZero(Math.floor(stopinterval / 60));

	// display start, median and end time below the timer bar
	var intervals = '<span class="left">0 min.</span>' +
									'<span class="center">' + centerminutes + ' min.</span>' +
									'<span class="right">' + stopminutes + ' min.</span>';

	jQuery('#timerintervals').html(intervals);

	// add timer to progressbar
	jQuery('#progressbar').everyTime(1000, 'timer', function (i) {

			// detect inactivity and notify the user
			// and don't display these notifications in pause mode
			if (inactivity_counter > 0 && (inactivity_counter % concentrationinterval === 0) &&
					(i < studyinterval || i > pauseinterval)) {

					concentrationNotification(skip_studytips);
			}
			inactivity_counter += 1;

			if (i == studyinterval) {
					pauseStudy();
			}
			if (i == pauseinterval) {

					// unblock pause mode if necessary
					jQuery.unblockUI();

					// offer user option to go to rehearsal mode
					rehearseStudy();
			}

			// keep counter running until the end
			if (i <= stopinterval) {
					var value = Math.round((i * 100) / stopinterval );
					jQuery('#progressbar').progressbar('option', 'value', value);

					// calculate time display
					var elapsed = '';

					var hours = leadingZero(Math.floor(i / 3600));
					var minutes = leadingZero(Math.floor(i / 60));
					var seconds = leadingZero(i % 60);

					// display hours, if we have 1 hour or more
					if (hours > 1) {
						elapsed += hours + ':';
					}
					// display minutes and seconds
					elapsed += minutes + ':' + seconds;

					jQuery('#elapsed').html(elapsed );
			} else {
					jQuery.growlUI(__("Time's up!"), '<p>' + __('Your time is up...') + '</p>', 5000);
					jQuery(this).stopTime('timer');
			}
	});
}

// display fullscreen notification
function displayFullscreenNotification()
{
	var isNav = (navigator.appName == 'Netscape') ? 1 : 0;
	var isIE = (navigator.appName.indexOf('Microsoft') != -1) ? 1 : 0;
	var isChrome = (navigator.userAgent.toLowerCase().indexOf('chrome') > -1) ? 1 : 0;
	var isSafari = (!isChrome && navigator.userAgent.toLowerCase().indexOf('safari') > -1) ? 1 : 0;
	var isOldChrome = (isChrome && parseFloat(navigator.appVersion) == 1) ? 1 : 0;

	// notify the user that you can go to fullscreen mode with F11
	if ((isIE && document.documentElement.clientHeight < screen.height) ||
			(window.innerHeight < screen.height)) {

		if (!(isOldChrome || isSafari)) {
			jQuery.growlUI(__('Switch to fullscreen'), '<p>' + __('Please press F11 to study in fullscreen mode.') + '</p>', 5000);
		}
	}
}


// display the mindmap
function displayMindmap(saveUrl, xlmFileName, xmlPath)
{

		basehref = getBaseHref();

		var flashvars = {};
		var params = {};

		params.allowfullscreen = 'true';
		params.allowscriptaccess = 'always';
		params.wmode = 'transparent';

		flashvars.fvNodesXml = xmlPath; //'swf/nodes.xml';
		flashvars.fvSaveUrl	= saveUrl;
		flashvars.fvXmlFilename = xlmFileName;
		flashvars.fvFontXml	= 'swf/xml/font.xml';
		//flashvars.fvDebug	= 'true';

		swfobject.embedSWF('swf/mindmap.swf', 'mindmap', '100%', '100%', '9.0.0', 'swf/expressInstall.swf', flashvars, params);
}

/**
 *  gets the dimension of the window. Returns an array with Width and Height
 */
function getWindowDimensions()
{
	var winWidth, winHeight, d = document;

	if (typeof window.innerWidth !== 'undefined') {
		winWidth = window.innerWidth;
		winHeight = window.innerHeight;
	} else if (d.documentElement && typeof d.documentElement.clientWidth !== 'undefined' && d.documentElement.clientWidth !== 0) {
		winWidth = d.documentElement.clientWidth;
		winHeight = d.documentElement.clientHeight;
	} else if (d.body && typeof d.body.clientWidth !== 'undefined') {
		winWidth = d.body.clientWidth;
		winHeight = d.body.clientHeight;
	}

	return [winWidth, winHeight];
}

// change the height of the mindmap and sidebar panel to their maximum size
function changeFullscreenBoxes()
{
	windowDimensions = getWindowDimensions();
	var availHeight = windowDimensions[1];

	// margin top (10) + navbar (41) + navbar margin (9) + sidebar_top (12) + sidebar_bottom (11) + margin bottom (10)
	var usedHeightPanel = 93 + 3;
	var usedHeightMindmap = 93 - 7 + 3;

	// resize to new max height, or (if not enough space), reset to minimum height
	// minimum usable height of sidepanel is 612px
	if (availHeight - usedHeightPanel >= 612) {
		jQuery('#sidepanel').height(availHeight - usedHeightPanel);
	} else {
		jQuery('#sidepanel').height(612);
	}

	// resize to new max height, or (if not enough space), reset to minimum height
	// minimum usable height of the mindmap is 618px
	if (availHeight - usedHeightMindmap >= 618) {
		jQuery('#map-container').height(availHeight - usedHeightMindmap);
	} else {
		jQuery('#map-container').height(618);
	}

	// remove left and right margins from the breadcrumb bar
	var breadcrumb_width = jQuery('div.map-wrapper').width() - 11 - 12;
	jQuery('div.breadCrumb').width(breadcrumb_width);
}


// do a resize of the mindmap and sidebar panel when the browser size changes
// also saves the mindmap XML on window close
function handleFullscreenResize()
{
	// when window is closed, we save the mindmap
	jQuery(window).unload(function() {
		saveXml();
	});

	jQuery(window).resize(function() {
		changeFullscreenBoxes();
	});
}

// toggle the wiki box
function toggleStudyPlugins()
{
	// handle study overlay close button
	jQuery('#wikiclose').die();
	jQuery('#wikiclose').bind('click', function (event) {
		jQuery('#study-options-tab').slideToggle();
		event.preventDefault();
	});

	jQuery('#study-options a').click(function (event) {
			var target = jQuery(this).attr('href');
			jQuery('#study-options-tab div.inner div').each(function() {
				jQuery(this).hide();
			});

			jQuery('#container_' + target).show();

			if (jQuery('#study-options-tab').css('display') == 'none'){
				jQuery('#study-options-tab').slideToggle();
			}

			event.preventDefault();
	});
}


// handle the translation plugin
function pluginTranslateWords()
{

	jQuery('#translation_source').watermark( __('Enter text to translate'));

	jQuery('#plugin_translation').submit(function (event) {

			// source and target language
			var sourceLang = jQuery('#plugin_translation select[name=from] option:selected').val() || 'en';
			var targetLang = jQuery('#plugin_translation select[name=to] option:selected').val() || 'nl';
			var callbacks = { start: function() { startSpinner('spinner_translate'); }, complete:   function() { stopSpinner('spinner_translate'); }, error:	function() { stopSpinner('spinner_translate'); } };

			jQuery('#translation_source').translate(sourceLang, targetLang, callbacks);
			event.preventDefault();
	});

}

function pluginWikiSearch()
{
	jQuery('#wikisearch_term').watermark(__('Enter term to search for'));

	jQuery('#wikisearch_explanation li a').die();
	jQuery('#wikisearch_explanation li a').live('click', function(event) {
		var term = jQuery(this).html();

		jQuery('#plugin_wikisearch input[name=prevterm]').val(jQuery('#wikisearch_term').val());
		jQuery('#wikisearch_term').val(term);
		jQuery('#plugin_wikisearch').trigger('submit');
		event.preventDefault();
	});

	jQuery('#plugin_wikisearch').submit(function (event) {

		startSpinner('spinner_wikisearch');
		jQuery('#wikisearch_explanation').hide();

		var searchterm =jQuery('#wikisearch_term').val();
		var language = jQuery('#plugin_wikisearch input[name=language]').val();
		var basehref = getBaseHref();

		jQuery.get(basehref + '/searchwiki.php', {lang: language, searchterm: searchterm, time: new Date().getTime()}, function(data) {

			var prevterm = jQuery('#plugin_wikisearch input[name=prevterm]').val();
			if (prevterm !== '') {

				data += '<br /><br /><li>Back to <a class="wikiterm" href="' + prevterm +'">' + prevterm + '</a></li>';
				jQuery('#plugin_wikisearch input[name=prevterm]').val('');
			}

			jQuery('#wikisearch_explanation').html(data).slideToggle();
			stopSpinner('spinner_wikisearch');
		});
		event.preventDefault();
	});
}

// handle submit of notepad entries
function pluginNotepad()
{
	jQuery('#save_notepad_btn').die();
	jQuery('#save_notepad_btn').live('click', function(event) {

		event.preventDefault();

		jQuery('#save_notepad_btn').attr('disabled', 'disabled');
		startSpinner('spinner_notepad');

		var postData = [];
		jQuery('#plugin_notepad :input').each(function(i, el){
				var tmp = {};
				tmp.name = jQuery(el).attr('name');
				tmp.value = jQuery(el).val();
				postData.push(tmp);
		});

		jQuery.post(jQuery('#plugin_notepad').attr('action'), postData,
			function(data) {

				stopSpinner('spinner_notepad');
				jQuery('#save_notepad_btn').removeAttr('disabled');
				jQuery('#study-options-tab').slideUp();
			});

		return false;
	});
}

// execute a Google Image Search
function startImageSearch(type, node_id, text, studyunit_id, user_id, source_id)
{
		var searchResult = document.getElementById('searchControl');

		// create a left, right search control
		// create a custom search form
		this.searchResult = new google.search.SearchControl();
		// set up for large result sets
		this.searchResult.setResultSetSize(GSearch.LARGE_RESULTSET);

		// configure control
		var searcher = new google.search.ImageSearch();
		searcher.setRestriction(google.search.Search.RESTRICT_SAFESEARCH, google.search.Search.SAFESEARCH_MODERATE);

		var options = new google.search.SearcherOptions();
		options.setExpandMode(google.search.SearchControl.EXPAND_MODE_OPEN);
		this.searchResult.addSearcher(searcher, options);

		var drawOptions = new google.search.DrawOptions();

		this.searchResult.setNoResultsString(GSearchControl.NO_RESULTS_DEFAULT_STRING);
		this.searchResult.draw(searchResult, drawOptions);

		// add some efaqt styling to the Google form using jQuery
		jQuery('input.gsc-input').addClass('text').val(text);
		jQuery('input.gsc-search-button').addClass('button');

		// add click handler to the images so we can pass the URL of the thumbnail to the mindmap
		jQuery('.gsc-resultsbox-visible').die();
		jQuery('.gsc-resultsbox-visible').live('click', function(elm) {
			elm.preventDefault();
			var thumb = jQuery(elm.target).attr('src');
			var original = jQuery(elm.target).parent().attr('href');

			// ignore non-existant images and google's browse buttons
			if (typeof thumb == 'undefined') {
				return;
			}

			// depending on type (either 'mindmap' or 'question') we either add a node
			// to the mindmap or return the URL of the selected image
			if (type == 'mindmap') {

				// download image locally
				jQuery.get('study/downloadfile?url=' + escape(thumb) + '&user_id=' + user_id + '&type=mindmap', { time: new Date().getTime()}, function(data) {

					if (data !== 'NOK') {
						// add image to mindmap
						setNodeIcon(data, node_id);

						// close colorbox
						parent.jQuery.fn.colorbox.close();
					}
				});

			} else {
					
					// download image locally
					jQuery.get('study/downloadfile?url=' + escape(thumb) + '&source_id=' + source_id + '&type=question' + '&original=' + original, { time: new Date().getTime()}, function(data) {

					// update our DOM
					window.location=window.location;
				});
			}
		});
}


function addTocBackButton(back_url)
{
	jQuery('#back_toc_items_btn').die();
	jQuery('#back_toc_items_btn').live('click', function() {
		jQuery.get(back_url, { time: new Date().getTime()}, function(data) {

			parent.jQuery('#studyContainer').html(data);
			parent.jQuery.fn.colorbox.close();
		});

	});
}

function openSubject(url)
{
	jQuery('<a />').colorbox({href: url, open: true});
	reloadParent();
}


function openTocItemQuestions(url)
{
	jQuery('<a />').colorbox({href: url, open: true});
}

// open the TOC tree lightbox within the study proces
function openStudyUnitTocTreePopup(url, nextUrl)
{
	// open colorbox
	jQuery('<a />').colorbox({href: url, open: true, overlayClose: false});

	// hide close button
	//jQuery('#cboxClose').hide();
	
	jQuery('#cboxClose, #cboxOverlay').click(function(){
		// when the close button is pressed, go to the next step.
		jQuery.get(nextUrl, { time: new Date().getTime()}, function(data) {
			parent.jQuery('#studyContainer').html(data);
			
			// restore the close action on the close button
			jQuery('#cboxClose, #cboxOverlay').unbind('click');
			jQuery('#cboxClose, #cboxOverlay').click(function(){	
				parent.jQuery.fn.colorbox.close();
			});
		});
	});
	
}

function checkSpelling(language, id)
{
	if (typeof id != 'undefined') {
		jQuery('#' + id).spellcheck({ lang: language, events: 'keypress blur paste' });
	} else {
		jQuery('#quest').spellcheck({ lang: language, events: 'keypress blur paste' });
		jQuery('#ans').spellcheck({ lang: language, events: 'keypress blur paste' });
		}
}


function doDatepicker()
{
	// get previous date
	var prevdate = jQuery('#datepicker').val() || '01-01-1970';

	jQuery('#datepicker').datepicker({
		showOn: 'button',
		buttonImage: 'images/datepicker.gif',
		buttonImageOnly: true,
		showAnim: 'fadeIn',
		dateFormat: 'dd-mm-yy',
		changeYear: true,
		yearRange: '1940:2000',
		defaultDate: prevdate
		});
}

/*************  Breadcrumb functions	 ***************************************/

function addBreadcrumb(text, url)
{

	var descr = text;
	var exists = false;

	// truncate texts that are too long
	if (text.length > 25) {
		text = text.substr(0, 25) + '...';
	}

	// parse all nodes to do some cleanup and to prevent double nodes
	jQuery('#breadcrumbs li a').each(function() {

		// exit if we already have a similar named node
		if (jQuery(this).text() == text) {
			exists = true;
		}
	});

	if (!exists) {

		// parse all nodes to do some cleanup and to prevent double nodes
		jQuery('#breadcrumbs li a').each(function() {
			// remove class=final from all previous li's
			jQuery(this).removeClass('final');
		});

		jQuery('#breadcrumbs li:last').removeClass('inactive');
		jQuery('#breadcrumbs li:last a').addClass('final');

		// append new node
		var new_link = '<a href="javascript:;" onclick="saveXml();ajaxGet(\'' + url + '\', \'studyContainer\');" title="' + descr + '">' + text + '</a>';

		jQuery('#breadcrumbs').append('<li class="inactive">' + new_link + '</li>');
	}
}

function resetBreadcrumb(text, url, position)
{
	// remove all breadcrumb notes from position specified
	jQuery('#breadcrumbs li').each(function(i)  {
		if (i >= position) {
			jQuery(this).remove();
		}
	});

	// layout last node
	jQuery('#breadcrumbs li:last a').addClass('final');

	addBreadcrumb(text, url);
}

/*************  Mindmap functions	***************************************/

function continueStudying(node_id) {

	// we only accept numeric nodes
	if (node_id == 0 || node_id.match(/^\d+$/) == null) {
		jQuery.growlUI(__('Function not available'), '<p>' + __('This function is only available for chapter titles, not for keywords.') + '</p>');
		return;
	}

	ajaxGet('study/continuestudying?id=' + node_id, 'studyContainer');
}

// open a lightbox with Google Image Search and allow a user to append
// an image to the current node specified by node_id
function mindmapImageLightbox(node_id, text)
{
	// open colorbox
	var url = 'study/imagesearch?node_id=' + node_id + '&text=' + text;
	jQuery('<a />').colorbox({href: url, open: true});
}

// open a lightbox with node info and allow a user to append
// an image to the current node specified by node_id
function mindmapInfoLightbox(node_id)
{
	// we only accept numeric nodes
	if (node_id == 0 || node_id.match(/^\d+$/) == null) {
		jQuery.growlUI(__('Function not available'), '<p>' + __('This function is only available for chapter titles, not for keywords.') + '</p>');
		return;
	}

	// open colorbox
	var url = 'study/info?node_id=' + node_id;
	jQuery('<a />').colorbox({href: url, open: true});
}

function thisMovie(movieName, lightbox)
{
	// normal window
	if (!lightbox) {
		if (navigator.appName.indexOf('Microsoft') != -1) {
				return window[movieName];
		} else {
				return document[movieName];
		}
	}

	// lightbox; access parent window
	if (navigator.appName.indexOf('Microsoft') != -1) {
			return window.parent[movieName];
	} else {
			return parent.document[movieName];
	}
}

function addNode(id, parentId, text)
{
	jQuery(document).ready(function() {
		var node = {};
		node.id = id;
		node.text = text;
		node.children = [];
		try {
			thisMovie('mindmap').addNode(node, parentId);
		} catch (err) {}

	});
}

function removeNodeById(id)
{
	thisMovie('mindmap').removeNodeById(id);
}

function getNode()
{
	return thisMovie('mindmap').getNode();
}

function setNodeText(text)
{
	thisMovie('mindmap').setNodeText(text);
}

function setNodeIcon(img, node_id)
{
	thisMovie('mindmap', true).setNodeIcon(img, node_id);
}

function getXml()
{
	alert(thisMovie('mindmap').getXml());
}

function saveXml()
{
	if (typeof(thisMovie('mindmap')) != 'undefined') {
		thisMovie('mindmap').saveXml();
	}
}

function showRelationArrow(id)
{
	try{
		thisMovie('mindmap').showRelationArrow(id);
	} catch(err) {}
}

function hideRelationArrow(id)
{
	thisMovie('mindmap').hideRelationArrow(id);
}

function showExpectation(id, text)
{
	try{
		thisMovie('mindmap').showCloud(id, text.replace(/\\/,''));
	} catch(err) {}
}

function mindmapReady()
{
	jQuery(init_mindmap_queue).each(function () { this(); });
}

/*********************************************************************/


/*************  Translation functions	***************************************/

// helper function to handle translations
function __(s)
{
	if (typeof(i18n)!='undefined' && i18n[s]) {
		return i18n[s];
	}
	return s;
}

// open a colorbox on our AJAX pages
function liveColorbox()
{
	jQuery('.colorbox').die();
	jQuery('.colorbox').live('click', function() {
		jQuery(this).colorbox({open:true});
		return false;
	});
}


// when file browser popup is closed, update data
function handleFilebrowser(url, postUrl, redirectUrl)
{
	// handle clicks on selected images in our directory
	jQuery('#file-box').click(function(elm) {
		elm.preventDefault();

		// retrieve URL from our a href
		// because there are also icons in here, we might have to look at the previous element
		var upload = jQuery(elm.target).attr('href');
		if (upload === '' || typeof upload == 'undefined') {
			upload = jQuery(elm.target).closest('a.file-image').attr('href');
		}
		
		if (!postUrl) {
			// add file to a new question.
			storeFileBrowserData(upload, url, true);
		} else {
			// the user is editing a question, now the url of the image has to be posted
			$.post(postUrl, { upload: upload },
			  function(data){
				window.location = redirectUrl;
			  });

		}
	});
}

// handle our selected file and update the DOM
function storeFileBrowserData(upload, url, closelightbox)
{
	// call special symfony action to store selected upload for this user/source_id combo
	url += '?upload=' + upload;

	jQuery.get(url, { time: new Date().getTime()}, function(data) {
		parent.jQuery('#question-options').html(data);

		if (closelightbox === true) {
			parent.jQuery.fn.colorbox.close();
		}
	});
}

// remove user uploaded file for a question
// just empties the hidden input and removes the display of uploaded file
function removeUploadedFile()
{
	jQuery('#remove_uploaded_file').click(function(event) {
		event.preventDefault();
		jQuery('#input_uploaded_file').attr('value', '');
		jQuery('#display_uploaded_file').remove();
		jQuery('#remove_uploaded_file').remove();
	});
}

// display concentration notification
function concentrationNotification(skip_studytips)
{
	// play notification sound
	swfobject.embedSWF('swf/playsound.swf?playSound=var_play', 'soundeffect', '1', '1', '9.0.0', 'swf/expressInstall.swf', '', {loop: false});

	var content = '<p>' + __('If you are having problems concentrating, read the study tips for help.') + '</p>';

	// showing studytips is a user configurable setting
	if (skip_studytips == 1) {

		// append studytip container and retrieve a random studytip through AJAX
		// somehow we can't call getStudytip() here because it doesn't return any data...
		jQuery.get('ajax/getstudytip', { time: new Date().getTime()}, function(data) {

			// FIXME: this is a nasty way to circumvent AJAX asynchronous race conditions
			if (data !== '') {
				content += '<hr /><div id="studytip">' + data + '</div>';
				jQuery.growlUI(__('Are you still studying?'), content, 8000);
			} else {
				jQuery.growlUI(__('Are you still studying?'), content, 8000);
			}

		});

	} else {
		jQuery.growlUI(__('Are you still studying?'), content, 8000);
	}

	return true;
}


// block the screen during study pause and display tips
function pauseStudy()
{
	jQuery.blockUI({message: jQuery('#studytips'), css: {
									left: '30%',
									width: '40%',
									top: '20%',
									padding: '0px 5px',
									background: '#444444',
									opacity: '0.9',
									borderColor: '#444444',
									cursor: 'auto'
									}
								});

	jQuery('.close-studytip').one('click', function(event) {
		jQuery.unblockUI();
		event.preventDefault();
	});

	// fill with first studytip
	getStudytip();

	// add handler to 'next tip' block
	jQuery('#getnexttip').bind('click', function(event) {
		event.preventDefault();
		getStudytip();
	});
}

// screen that will be displayed after pause mode, offers rehearsal option
function rehearseStudy()
{
	jQuery.blockUI({message: jQuery('#rehearsal'), css: {
									left: '30%',
									width: '40%',
									top: '20%',
									padding: '0px 5px',
									background: '#444444',
									opacity: '0.9',
									borderColor: '#444444',
									cursor: 'auto'
									}
								});

	// close button
	jQuery('.close-studytip').bind('click', function(event) {
		jQuery.unblockUI();
		event.preventDefault();
	});

	// rehearsal button
	jQuery('#rehearse_yes').one('click', function(event) {

		var url = jQuery(this).attr('href');

		jQuery.unblockUI();
		startSpinner();

		jQuery.get(url, { time: new Date().getTime()}, function(data) {
			stopSpinner();
			parent.jQuery('#studyContainer').html(data);
		});

		event.preventDefault();
	});

	// resume button
	jQuery('#rehearse_no').one('click', function(event) {
		jQuery.unblockUI();
		event.preventDefault();
	});

}

// retrieves a new study tip and places it into div#studytip
function getStudytip()
{
	jQuery.get('ajax/getstudytip', { time: new Date().getTime()}, function(data) {
		jQuery('#studytip').html(data);
	});
}

// retrieves a new study tip and places it into div#studytip
function displayExplanation()
{
	jQuery('a.explanation-link').die();
	jQuery('a.explanation-link').live('click', function(e) {

		jQuery('.explanation-text').slideToggle();

		// we hide the list of own questions on the question module because of lack of space
		if (jQuery('#quest').length) {
			jQuery('#myquestions').toggle();
		}

		e.preventDefault();
	});
}

function round_number(number,dec_places) {
	// Version 2.0 (c) Copyright 2008, Russell Walker, Netshine Software Limited. www.netshinesoftware.com
	var new_number = '';
	var i = 0;
	var sign = '';
	number = number.toString();
	number=number.replace(/^\s+|\s+$/g,'');

	if (number.charCodeAt(0) == 45) {
		sign = '-';
		number = number.substr(1).replace(/^\s+|\s+$/g,'');
	}

	dec_places = dec_places * 1;
	dec_point_pos = number.lastIndexOf('.');

	if (dec_point_pos === 0) {
		number= '0' + number;
		dec_point_pos = 1;
	}

	if (dec_point_pos == -1 || dec_point_pos == number.length - 1) {

		if (dec_places > 0) {
			new_number = number + '.';
			for (i = 0;i < dec_places; i++) {
				new_number += '0';
			}
			if (new_number === 0) {
				sign = '';
			}
			return sign + new_number;
		} else {
			return sign + number;
		}
	}

	var existing_places = (number.length - 1) - dec_point_pos;

	if (existing_places == dec_places) {
		return sign + number;
	}
	if (existing_places < dec_places) {
		new_number = number;

		for (i = existing_places; i < dec_places; i++) {
			new_number += '0';
		}

		if (new_number === 0) {
				sign = '';
		}

		return sign + new_number;
	}

	var end_pos = (dec_point_pos * 1) + dec_places;
	var round_up = false;
	if ((number.charAt(end_pos + 1) * 1) > 4) {
		round_up = true;
	}

	var digit_array = [];
	for (i = 0;i <= end_pos; i++) {
		digit_array[i] = number.charAt(i);
	}

	for (i = digit_array.length - 1; i >= 0; i--) {
		if (digit_array[i] == '.') {
			continue;
		}

		if (round_up) {
			digit_array[i]++;
			if (digit_array[i] < 10) {
				break;
			}
		} else {
			break;
		}
	}

	for (i = 0; i <= end_pos; i++) {
		if (digit_array[i] == '.' || digit_array[i] < 10 || i === 0) {
			new_number += digit_array[i];
		} else {
			new_number += '0';
		}
	}

	if (dec_places === 0) {
			new_number = new_number.replace('.', '');
	}
	if (new_number === 0) {
			sign = '';
	}
	return sign+new_number;
}

// gives cost indication in money, based on credits
// used in buycredits and transfercredits
function calculateCosts(credits, eurcreditvalue, dollarfactor, poundfactor, rpfactor, chffactor)
{
	var eurvalue = round_number(credits * eurcreditvalue, 2);

	// initial situation: display values
	var costs = __('Roughly equivalent to') + ' ' +
							'&euro;' + eurvalue + ', ' +
							'$' + round_number(eurvalue * dollarfactor, 2) + ', ' +
							'&pound;' + round_number(eurvalue * poundfactor, 2) + ', ' +
							'Rp.' + round_number(eurvalue * rpfactor, 2) + ', ' +
							'CHF' + round_number(eurvalue * chffactor, 2);
	return costs;
}

function displayCreditCosts(bindto, eurcreditvalue, dollarfactor, poundfactor, rpfactor, chffactor)
{
	// on start, display credits as well
	var elm = '#' + bindto;
	var credits = jQuery(elm + ' option:selected').text();
	credits = credits.match(/\d+/);

	jQuery('#curval').html(calculateCosts(credits, eurcreditvalue, dollarfactor, poundfactor, rpfactor, chffactor));

	// on change calculate new values
	jQuery(elm).change(function() {
		credits = jQuery(elm + ' option:selected').text();
		credits = credits.match(/\d+/);
		jQuery('#curval').html(calculateCosts(credits, eurcreditvalue, dollarfactor, poundfactor, rpfactor, chffactor));
	});
}

// display link to 'buy questions' on Q/A page
function displayAvailableQuestions()
{
	var available = jQuery('#available_questions').text();
	available = parseInt(available, 0);

	// because of asynchronous javascript in the updatelinks block
	// we might not have values here
	// therefore we just exit here and call displayAvailableQuestions in
	// addUpdateLinks() as well
	if (isNaN(available)) {
		return;
	}

	if (available > 0) {
		var href = jQuery('#buy_questions_link').attr('href');
		var text = available + ' ' + __('new questions available');
		href = '<a href="' + href + '" class="link colorbox floatr">' + text + '</a>';
		jQuery('#new_questions_available').html(href);

	}
}

/**
* Function : dump()
* Arguments: The data - array,hash(associative array),object
*	The level - OPTIONAL
* Returns  : The textual representation of the array.
* This function was inspired by the print_r function of PHP.
* This will accept some data as the argument and return a text that will be a more readable version of the array/hash/object that is given.
*/
function dump(arr,level)
{
	var dumped_text = '';
	if (!level) {
		level = 0;
	}

	// The padding given at the beginning of the line.
	var level_padding = '';
	for (var j = 0;j < level + 1; j++) {
		level_padding += '	';
	}

	// Array/Hashes/Objects
	if (typeof(arr) == 'object') {

		for (var item in arr) {
			var value = arr[item];

			// If it is an array
			if (typeof(value) == 'object') {
				dumped_text += level_padding + "'" + item + "' ...\n";
				dumped_text += dump(value,level + 1);
			} else {
				dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
			}
		}
	// Strings/Chars/Numbers etc.
	} else {
		dumped_text = '===>' + arr + '<===(' + typeof(arr) + ')';
	}
	return dumped_text;
}