/*

 * jQuery Tooltip plugin 1.3

 *

 * http://bassistance.de/jquery-plugins/jquery-plugin-tooltip/

 * http://docs.jquery.com/Plugins/Tooltip

 *

 * Copyright (c) 2006 - 2008 Jörn Zaefferer

 *

 * $Id: jquery.tooltip.js 5741 2008-06-21 15:22:16Z joern.zaefferer $

 * 

 * Dual licensed under the MIT and GPL licenses:

 *   http://www.opensource.org/licenses/mit-license.php

 *   http://www.gnu.org/licenses/gpl.html

 */

;(function($) {

		// the tooltip element

	var helper = {},

		// the current tooltipped element

		current,

		// the title of the current element, used for restoring

		title,

		// timeout id for delayed tooltips

		tID,

		// IE 5.5 or 6

		IE = $.browser.msie && /MSIE\s(5\.5|6\.)/.test(navigator.userAgent),

		// flag for mouse tracking

		track = false;

	$.tooltip = {

		blocked: false,

		defaults: {

			delay: 200,

			fade: false,

			showURL: true,

			extraClass: "",

			top: 15,

			left: 15,

			id: "tooltip"

		},

		block: function() {

			$.tooltip.blocked = !$.tooltip.blocked;

		}

	};

	$.fn.extend({

		tooltip: function(settings) {

			settings = $.extend({}, $.tooltip.defaults, settings);

			createHelper(settings);

			return this.each(function() {

					$.data(this, "tooltip", settings);

					this.tOpacity = helper.parent.css("opacity");

					// copy tooltip into its own expando and remove the title

					this.tooltipText = this.title;

					$(this).removeAttr("title");

					// also remove alt attribute to prevent default tooltip in IE

					this.alt = "";

				})

				.mouseover(save)

				.mouseout(hide)

				.click(hide);

		},

		fixPNG: IE ? function() {

			return this.each(function () {

				var image = $(this).css('backgroundImage');

				if (image.match(/^url\(["']?(.*\.png)["']?\)$/i)) {

					image = RegExp.$1;

					$(this).css({

						'backgroundImage': 'none',

						'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"

					}).each(function () {

						var position = $(this).css('position');

						if (position != 'absolute' && position != 'relative')

							$(this).css('position', 'relative');

					});

				}

			});

		} : function() { return this; },

		unfixPNG: IE ? function() {

			return this.each(function () {

				$(this).css({'filter': '', backgroundImage: ''});

			});

		} : function() { return this; },

		hideWhenEmpty: function() {

			return this.each(function() {

				$(this)[ $(this).html() ? "show" : "hide" ]();

			});

		},

		url: function() {

			return this.attr('href') || this.attr('src');

		}

	});

	function createHelper(settings) {

		// there can be only one tooltip helper

		if( helper.parent )

			return;

		// create the helper, h3 for title, div for url

		helper.parent = $('<div id="' + settings.id + '"><h3></h3><div class="body"></div><div class="url"></div></div>')

			// add to document

			.appendTo(document.body)

			// hide it at first

			.hide();

		// apply bgiframe if available

		if ( $.fn.bgiframe )

			helper.parent.bgiframe();

		// save references to title and url elements

		helper.title = $('h3', helper.parent);

		helper.body = $('div.body', helper.parent);

		helper.url = $('div.url', helper.parent);

	}

	function settings(element) {

		return $.data(element, "tooltip");

	}

	// main event handler to start showing tooltips

	function handle(event) {

		// show helper, either with timeout or on instant

		if( settings(this).delay )

			tID = setTimeout(show, settings(this).delay);

		else

			show();

		// if selected, update the helper position when the mouse moves

		track = !!settings(this).track;

		$(document.body).bind('mousemove', update);

		// update at least once

		update(event);

	}

	// save elements title before the tooltip is displayed

	function save() {

		// if this is the current source, or it has no title (occurs with click event), stop

		if ( $.tooltip.blocked || this == current || (!this.tooltipText && !settings(this).bodyHandler) )

			return;

		// save current

		current = this;

		title = this.tooltipText;

		if ( settings(this).bodyHandler ) {

			helper.title.hide();

			var bodyContent = settings(this).bodyHandler.call(this);

			if (bodyContent.nodeType || bodyContent.jquery) {

				helper.body.empty().append(bodyContent)

			} else {

				helper.body.html( bodyContent );

			}

			helper.body.show();

		} else if ( settings(this).showBody ) {

			var parts = title.split(settings(this).showBody);

			helper.title.html(parts.shift()).show();

			helper.body.empty();

			for(var i = 0, part; (part = parts[i]); i++) {

				if(i > 0)

					helper.body.append("<br/>");

				helper.body.append(part);

			}

			helper.body.hideWhenEmpty();

		} else {

			helper.title.html(title).show();

			helper.body.hide();

		}

		// if element has href or src, add and show it, otherwise hide it

		if( settings(this).showURL && $(this).url() )

			helper.url.html( $(this).url().replace('http://', '') ).show();

		else 

			helper.url.hide();

		// add an optional class for this tip

		helper.parent.addClass(settings(this).extraClass);

		// fix PNG background for IE

		if (settings(this).fixPNG )

			helper.parent.fixPNG();

		handle.apply(this, arguments);

	}

	// delete timeout and show helper

	function show() {

		tID = null;

		if ((!IE || !$.fn.bgiframe) && settings(current).fade) {

			if (helper.parent.is(":animated"))

				helper.parent.stop().show().fadeTo(settings(current).fade, current.tOpacity);

			else

				helper.parent.is(':visible') ? helper.parent.fadeTo(settings(current).fade, current.tOpacity) : helper.parent.fadeIn(settings(current).fade);

		} else {

			helper.parent.show();

		}

		update();

	}

	/**

	 * callback for mousemove

	 * updates the helper position

	 * removes itself when no current element

	 */

	function update(event)	{

		if($.tooltip.blocked)

			return;

		if (event && event.target.tagName == "OPTION") {

			return;

		}

		// stop updating when tracking is disabled and the tooltip is visible

		if ( !track && helper.parent.is(":visible")) {

			$(document.body).unbind('mousemove', update)

		}

		// if no current element is available, remove this listener

		if( current == null ) {

			$(document.body).unbind('mousemove', update);

			return;	

		}

		// remove position helper classes

		helper.parent.removeClass("viewport-right").removeClass("viewport-bottom");

		var left = helper.parent[0].offsetLeft;

		var top = helper.parent[0].offsetTop;

		if (event) {

			// position the helper 15 pixel to bottom right, starting from mouse position

			left = event.pageX + settings(current).left;

			top = event.pageY + settings(current).top;

			var right='auto';

			if (settings(current).positionLeft) {

				right = $(window).width() - left;

				left = 'auto';

			}

			helper.parent.css({

				left: left,

				right: right,

				top: top

			});

		}

		var v = viewport(),

			h = helper.parent[0];

		// check horizontal position

		if (v.x + v.cx < h.offsetLeft + h.offsetWidth) {

			left -= h.offsetWidth + 20 + settings(current).left;

			helper.parent.css({left: left + 'px'}).addClass("viewport-right");

		}

		// check vertical position

		if (v.y + v.cy < h.offsetTop + h.offsetHeight) {

			top -= h.offsetHeight + 20 + settings(current).top;

			helper.parent.css({top: top + 'px'}).addClass("viewport-bottom");

		}

	}

	function viewport() {

		return {

			x: $(window).scrollLeft(),

			y: $(window).scrollTop(),

			cx: $(window).width(),

			cy: $(window).height()

		};

	}

	// hide helper and restore added classes and the title

	function hide(event) {

		if($.tooltip.blocked)

			return;

		// clear timeout if possible

		if(tID)

			clearTimeout(tID);

		// no more current element

		current = null;

		var tsettings = settings(this);

		function complete() {

			helper.parent.removeClass( tsettings.extraClass ).hide().css("opacity", "");

		}

		if ((!IE || !$.fn.bgiframe) && tsettings.fade) {

			if (helper.parent.is(':animated'))

				helper.parent.stop().fadeTo(tsettings.fade, 0, complete);

			else

				helper.parent.stop().fadeOut(tsettings.fade, complete);

		} else

			complete();

		if( settings(this).fixPNG )

			helper.parent.unfixPNG();

	}

})(jQuery);