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/* This notice must be untouched at all times.

wz_tooltip.js	 v. 4.12

The latest version is available at
http://www.walterzorn.com
or http://www.devira.com
or http://www.walterzorn.de

Copyright (c) 2002-2007 Walter Zorn. All rights reserved.
Created 1.12.2002 by Walter Zorn (Web: http://www.walterzorn.com )
Last modified: 13.7.2007

Easy-to-use cross-browser tooltips.
Just include the script at the beginning of the  section, and invoke
Tip('Tooltip text') from within the desired HTML onmouseover eventhandlers.
No container DIV, no onmouseouts required.
By default, width of tooltips is automatically adapted to content.
Is even capable of dynamically converting arbitrary HTML elements to tooltips
by calling TagToTip('ID_of_HTML_element_to_be_converted') instead of Tip(),
which means you can put important, search-engine-relevant stuff into tooltips.
Appearance of tooltips can be individually configured
via commands passed to Tip() or TagToTip().

Tab Width: 4
LICENSE: LGPL

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (LGPL) as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

For more details on the GNU Lesser General Public License,
see http://www.gnu.org/copyleft/lesser.html
*/

var config = new Object();


//===================  GLOBAL TOOPTIP CONFIGURATION  =========================//
var  tt_Debug	= false		// false or true - recommended: false once you release your page to the public
var  tt_Enabled	= true		// Allows to (temporarily) suppress tooltips, e.g. by providing the user with a button that sets this global variable to false
var  TagsToTip	= true		// false or true - if true, the script is capable of converting HTML elements to tooltips

// For each of the following config variables there exists a command, which is
// just the variablename in uppercase, to be passed to Tip() or TagToTip() to
// configure tooltips individually. Individual commands override global
// configuration. Order of commands is arbitrary.
// Example: onmouseover="Tip('Tooltip text', LEFT, true, BGCOLOR, '#FF9900', FADEIN, 400)"

config. Above			= false 	// false or true - tooltip above mousepointer?
config. BgColor 		= '#E4E7FF' // Background color
config. BgImg			= ''		// Path to background image, none if empty string ''
config. BorderColor 	= '#002299'
config. BorderStyle 	= 'solid'	// Any permitted CSS value, but I recommend 'solid', 'dotted' or 'dashed'
config. BorderWidth 	= 1
config. CenterMouse 	= false 	// false or true - center the tip horizontally below (or above) the mousepointer
config. ClickClose		= false 	// false or true - close tooltip if the user clicks somewhere
config. CloseBtn		= false 	// false or true - closebutton in titlebar
config. CloseBtnColors	= ['#990000', '#FFFFFF', '#DD3333', '#FFFFFF']	  // [Background, text, hovered background, hovered text] - use empty strings '' to inherit title colors
config. CloseBtnText	= ' X '	// Close button text (may also be an image tag)
config. CopyContent		= true		// When converting a HTML element to a tooltip, copy only the element's content, rather than converting the element by its own
config. Delay			= 400		// Time span in ms until tooltip shows up
config. Duration		= 0 		// Time span in ms after which the tooltip disappears; 0 for infinite duration
config. FadeIn			= 0 		// Fade-in duration in ms, e.g. 400; 0 for no animation
config. FadeOut 		= 0
config. FadeInterval	= 30		// Duration of each fade step in ms (recommended: 30) - shorter is smoother but causes more CPU-load
config. Fix 			= null		// Fixated position - x- an y-oordinates in brackets, e.g. [210, 480], or null for no fixation
config. FollowMouse		= true		// false or true - tooltip follows the mouse
config. FontColor		= '#000044'
config. FontFace		= 'Verdana,Geneva,sans-serif'
config. FontSize		= '8pt' 	// E.g. '9pt' or '12px' - unit is mandatory
config. FontWeight		= 'normal'	// 'normal' or 'bold';
config. Left			= false 	// false or true - tooltip on the left of the mouse
config. OffsetX 		= 14		// Horizontal offset of left-top corner from mousepointer
config. OffsetY 		= 8 		// Vertical offset
config. Opacity 		= 100		// Integer between 0 and 100 - opacity of tooltip in percent
config. Padding 		= 3 		// Spacing between border and content
config. Shadow			= false 	// false or true
config. ShadowColor 	= '#C0C0C0'
config. ShadowWidth 	= 5
config. Sticky			= false 	// Do NOT hide tooltip on mouseout? false or true
config. TextAlign		= 'left'	// 'left', 'right' or 'justify'
config. Title			= ''		// Default title text applied to all tips (no default title: empty string '')
config. TitleAlign		= 'left'	// 'left' or 'right' - text alignment inside the title bar
config. TitleBgColor	= ''		// If empty string '', BorderColor will be used
config. TitleFontColor	= '#ffffff'	// Color of title text - if '', BgColor (of tooltip body) will be used
config. TitleFontFace	= ''		// If '' use FontFace (boldified)
config. TitleFontSize	= ''		// If '' use FontSize
config. Width			= 0 		// Tooltip width; 0 for automatic adaption to tooltip content
//=======  END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW  ==============//




//======================  PUBLIC  ============================================//
function Tip()
{
	tt_Tip(arguments, null);
}
function TagToTip()
{
	if(TagsToTip)
	{
		var t2t = tt_GetElt(arguments[0]);
		if(t2t)
			tt_Tip(arguments, t2t);
	}
}

//==================  PUBLIC EXTENSION API	==================================//
// Extension eventhandlers currently supported:
// OnLoadConfig, OnCreateContentString, OnSubDivsCreated, OnShow, OnMoveBefore,
// OnMoveAfter, OnHideInit, OnHide, OnKill

var tt_aElt = new Array(10), // Container DIV, outer title & body DIVs, inner title & body TDs, closebutton SPAN, shadow DIVs, and IFRAME to cover windowed elements in IE
tt_aV = new Array(),	// Caches and enumerates config data for currently active tooltip
tt_sContent,			// Inner tooltip text or HTML
tt_scrlX = 0, tt_scrlY = 0,
tt_musX, tt_musY,
tt_over,
tt_x, tt_y, tt_w, tt_h; // Position, width and height of currently displayed tooltip

function tt_Extension()
{
	tt_ExtCmdEnum();
	tt_aExt[tt_aExt.length] = this;
	return this;
}
function tt_SetTipPos(x, y)
{
	var css = tt_aElt[0].style;

	tt_x = x;
	tt_y = y;
	css.left = x + "px";
	css.top = y + "px";
	if(tt_ie56)
	{
		var ifrm = tt_aElt[tt_aElt.length - 1];
		if(ifrm)
		{
			ifrm.style.left = css.left;
			ifrm.style.top = css.top;
		}
	}
}
function tt_Hide()
{
	if(tt_db && tt_iState)
	{
		if(tt_iState & 0x2)
		{
			tt_aElt[0].style.visibility = "hidden";
			tt_ExtCallFncs(0, "Hide");
		}
		tt_tShow.EndTimer();
		tt_tHide.EndTimer();
		tt_tDurt.EndTimer();
		tt_tFade.EndTimer();
		if(!tt_op && !tt_ie)
		{
			tt_tWaitMov.EndTimer();
			tt_bWait = false;
		}
		if(tt_aV[CLICKCLOSE])
			tt_RemEvtFnc(document, "mouseup", tt_HideInit);
		tt_AddRemOutFnc(false);
		tt_ExtCallFncs(0, "Kill");
		// In case of a TagToTip tooltip, hide converted DOM node and
		// re-insert it into document
		if(tt_t2t && !tt_aV[COPYCONTENT])
		{
			tt_t2t.style.display = "none";
			tt_MovDomNode(tt_t2t, tt_aElt[6], tt_t2tDad);
		}
		tt_iState = 0;
		tt_over = null;
		tt_ResetMainDiv();
		if(tt_aElt[tt_aElt.length - 1])
			tt_aElt[tt_aElt.length - 1].style.display = "none";
	}
}
function tt_GetElt(id)
{
	return(document.getElementById ? document.getElementById(id)
			: document.all ? document.all[id]
			: null);
}
function tt_GetDivW(el)
{
	return(el ? (el.offsetWidth || el.style.pixelWidth || 0) : 0);
}
function tt_GetDivH(el)
{
	return(el ? (el.offsetHeight || el.style.pixelHeight || 0) : 0);
}
function tt_GetScrollX()
{
	return(window.pageXOffset || (tt_db ? (tt_db.scrollLeft || 0) : 0));
}
function tt_GetScrollY()
{
	return(window.pageYOffset || (tt_db ? (tt_db.scrollTop || 0) : 0));
}
function tt_GetClientW()
{
	return(document.body && (typeof(document.body.clientWidth) != tt_u) ? document.body.clientWidth
			: (typeof(window.innerWidth) != tt_u) ? window.innerWidth
			: tt_db ? (tt_db.clientWidth || 0)
			: 0);
}
function tt_GetClientH()
{
	// Exactly this order seems to yield correct values in all major browsers
	return(document.body && (typeof(document.body.clientHeight) != tt_u) ? document.body.clientHeight
			: (typeof(window.innerHeight) != tt_u) ? window.innerHeight
			: tt_db ? (tt_db.clientHeight || 0)
			: 0);
}
function tt_GetEvtX(e)
{
	return (e ? ((typeof(e.pageX) != tt_u) ? e.pageX : (e.clientX + tt_scrlX)) : 0);
}
function tt_GetEvtY(e)
{
	return (e ? ((typeof(e.pageY) != tt_u) ? e.pageY : (e.clientY + tt_scrlY)) : 0);
}
function tt_AddEvtFnc(el, sEvt, PFnc)
{
	if(el)
	{
		if(el.addEventListener)
			el.addEventListener(sEvt, PFnc, false);
		else
			el.attachEvent("on" + sEvt, PFnc);
	}
}
function tt_RemEvtFnc(el, sEvt, PFnc)
{
	if(el)
	{
		if(el.removeEventListener)
			el.removeEventListener(sEvt, PFnc, false);
		else
			el.detachEvent("on" + sEvt, PFnc);
	}
}

//======================  PRIVATE  ===========================================//
var tt_aExt = new Array(),	// Array of extension objects

tt_db, tt_op, tt_ie, tt_ie56, tt_bBoxOld,	// Browser flags
tt_body,
tt_flagOpa, 			// Opacity support: 1=IE, 2=Khtml, 3=KHTML, 4=Moz, 5=W3C
tt_maxPosX, tt_maxPosY,
tt_iState = 0,			// Tooltip active |= 1, shown |= 2, move with mouse |= 4
tt_opa, 				// Currently applied opacity
tt_bJmpVert,			// Tip above mouse (or ABOVE tip below mouse)
tt_t2t, tt_t2tDad,		// Tag converted to tip, and its parent element in the document
tt_elDeHref,			// The tag from which Opera has removed the href attribute
// Timer
tt_tShow = new Number(0), tt_tHide = new Number(0), tt_tDurt = new Number(0),
tt_tFade = new Number(0), tt_tWaitMov = new Number(0),
tt_bWait = false,
tt_u = "undefined";


function tt_Init()
{
	tt_MkCmdEnum();
	// Send old browsers instantly to hell
	if(!tt_Browser() || !tt_MkMainDiv())
		return;
	tt_IsW3cBox();
	tt_OpaSupport();
	tt_AddEvtFnc(document, "mousemove", tt_Move);
	// In Debug mode we search for TagToTip() calls in order to notify
	// the user if they've forgotten to set the TagsToTip config flag
	if(TagsToTip || tt_Debug)
		tt_SetOnloadFnc();
	tt_AddEvtFnc(window, "scroll",
		function()
		{
			tt_scrlX = tt_GetScrollX();
			tt_scrlY = tt_GetScrollY();
			if(tt_iState && !(tt_aV[STICKY] && (tt_iState & 2)))
				tt_HideInit();
		} );
	// Ensure the tip be hidden when the page unloads
	tt_AddEvtFnc(window, "unload", tt_Hide);
	tt_Hide();
}
// Creates command names by translating config variable names to upper case
function tt_MkCmdEnum()
{
	var n = 0;
	for(var i in config)
		eval("window." + i.toString().toUpperCase() + " = " + n++);
	tt_aV.length = n;
}
function tt_Browser()
{
	var n, nv, n6, w3c;

	n = navigator.userAgent.toLowerCase(),
	nv = navigator.appVersion;
	tt_op = (document.defaultView && typeof(eval("w" + "indow" + "." + "o" + "p" + "er" + "a")) != tt_u);
	tt_ie = n.indexOf("msie") != -1 && document.all && !tt_op;
	if(tt_ie)
	{
		var ieOld = (!document.compatMode || document.compatMode == "BackCompat");
		tt_db = !ieOld ? document.documentElement : (document.body || null);
		if(tt_db)
			tt_ie56 = parseFloat(nv.substring(nv.indexOf("MSIE") + 5)) >= 5.5
					&& typeof document.body.style.maxHeight == tt_u;
	}
	else
	{
		tt_db = document.documentElement || document.body ||
				(document.getElementsByTagName ? document.getElementsByTagName("body")[0]
				: null);
		if(!tt_op)
		{
			n6 = document.defaultView && typeof document.defaultView.getComputedStyle != tt_u;
			w3c = !n6 && document.getElementById;
		}
	}
	tt_body = (document.getElementsByTagName ? document.getElementsByTagName("body")[0]
				: (document.body || null));
	if(tt_ie || n6 || tt_op || w3c)
	{
		if(tt_body && tt_db)
		{
			if(document.attachEvent || document.addEventListener)
				return true;
		}
		else
			tt_Err("wz_tooltip.js must be included INSIDE the body section,"
					+ " immediately after the opening  tag.");
	}
	tt_db = null;
	return false;
}
function tt_MkMainDiv()
{
	// Create the tooltip DIV
	if(tt_body.insertAdjacentHTML)
		tt_body.insertAdjacentHTML("afterBegin", tt_MkMainDivHtm());
	else if(typeof tt_body.innerHTML != tt_u && document.createElement && tt_body.appendChild)
		tt_body.appendChild(tt_MkMainDivDom());
	// FireFox Alzheimer bug
	if(window.tt_GetMainDivRefs && tt_GetMainDivRefs())
		return true;
	tt_db = null;
	return false;
}
function tt_MkMainDivHtm()
{
	return('' +
			(tt_ie56 ? ('')
			: ''));
}
function tt_MkMainDivDom()
{
	var el = document.createElement("div");
	if(el)
		el.id = "WzTtDiV";
	return el;
}
function tt_GetMainDivRefs()
{
	tt_aElt[0] = tt_GetElt("WzTtDiV");
	if(tt_ie56 && tt_aElt[0])
	{
		tt_aElt[tt_aElt.length - 1] = tt_GetElt("WzTtIfRm");
		if(!tt_aElt[tt_aElt.length - 1])
			tt_aElt[0] = null;
	}
	if(tt_aElt[0])
	{
		var css = tt_aElt[0].style;

		css.visibility = "hidden";
		css.position = "absolute";
		css.overflow = "hidden";
		return true;
	}
	return false;
}
function tt_ResetMainDiv()
{
	var w = (window.screen && screen.width) ? screen.width : 10000;

	tt_SetTipPos(-w, 0);
	tt_aElt[0].innerHTML = "";
	tt_aElt[0].style.width = (w - 1) + "px";
}
function tt_IsW3cBox()
{
	var css = tt_aElt[0].style;

	css.padding = "10px";
	css.width = "40px";
	tt_bBoxOld = (tt_GetDivW(tt_aElt[0]) == 40);
	css.padding = "0px";
	tt_ResetMainDiv();
}
function tt_OpaSupport()
{
	var css = tt_body.style;

	tt_flagOpa = (typeof(css.filter) != tt_u) ? 1
				: (typeof(css.KhtmlOpacity) != tt_u) ? 2
				: (typeof(css.KHTMLOpacity) != tt_u) ? 3
				: (typeof(css.MozOpacity) != tt_u) ? 4
				: (typeof(css.opacity) != tt_u) ? 5
				: 0;
}
// Ported from http://dean.edwards.name/weblog/2006/06/again/
// (Dean Edwards et al.)
function tt_SetOnloadFnc()
{
	tt_AddEvtFnc(document, "DOMContentLoaded", tt_HideSrcTags);
	tt_AddEvtFnc(window, "load", tt_HideSrcTags);
	if(tt_body.attachEvent)
		tt_body.attachEvent("onreadystatechange",
			function() {
				if(tt_body.readyState == "complete")
					tt_HideSrcTags();
			} );
	if(/WebKit|KHTML/i.test(navigator.userAgent))
	{
		var t = setInterval(function() {
					if(/loaded|complete/.test(document.readyState))
					{
						clearInterval(t);
						tt_HideSrcTags();
					}
				}, 10);
	}
}
function tt_HideSrcTags()
{
	if(!window.tt_HideSrcTags || window.tt_HideSrcTags.done)
		return;
	window.tt_HideSrcTags.done = true;
	if(!tt_HideSrcTagsRecurs(tt_body))
		tt_Err("To enable the capability to convert HTML elements to tooltips,"
				+ " you must set TagsToTip in the global tooltip configuration"
				+ " to true.");
}
function tt_HideSrcTagsRecurs(dad)
{
	var a, ovr, asT2t;

	// Walk the DOM tree for tags that have an onmouseover attribute
	// containing a TagToTip('...') call.
	// (.childNodes first since .children is bugous in Safari)
	a = dad.childNodes || dad.children || null;
	for(var i = a ? a.length : 0; i;)
	{--i;
		if(!tt_HideSrcTagsRecurs(a[i]))
			return false;
		ovr = a[i].getAttribute ? a[i].getAttribute("onmouseover")
				: (typeof a[i].onmouseover == "function") ? a[i].onmouseover
				: null;
		if(ovr)
		{
			asT2t = ovr.toString().match(/TagToTip\s*\(\s*'[^'.]+'\s*[\),]/);
			if(asT2t && asT2t.length)
			{
				if(!tt_HideSrcTag(asT2t[0]))
					return false;
			}
		}
	}
	return true;
}
function tt_HideSrcTag(sT2t)
{
	var id, el;

	// The ID passed to the found TagToTip() call identifies an HTML element
	// to be converted to a tooltip, so hide that element
	id = sT2t.replace(/.+'([^'.]+)'.+/, "$1");
	el = tt_GetElt(id);
	if(el)
	{
		if(tt_Debug && !TagsToTip)
			return false;
		else
			el.style.display = "none";
	}
	else
		tt_Err("Invalid ID\n'" + id + "'\npassed to TagToTip()."
				+ " There exists no HTML element with that ID.");
	return true;
}
function tt_Tip(arg, t2t)
{
	if(!tt_db)
		return;
	if(tt_iState)
		tt_Hide();
	if(!tt_Enabled)
		return;
	tt_t2t = t2t;
	if(!tt_ReadCmds(arg))
		return;
	tt_iState = 0x1 | 0x4;
	tt_AdaptConfig1();
	tt_MkTipContent(arg);
	tt_MkTipSubDivs();
	tt_FormatTip();
	tt_bJmpVert = false;
	tt_maxPosX = tt_GetClientW() + tt_scrlX - tt_w - 1;
	tt_maxPosY = tt_GetClientH() + tt_scrlY - tt_h - 1;
	tt_AdaptConfig2();
	// We must fake the first mousemove in order to ensure the tip
	// be immediately shown and positioned
	tt_Move();
	tt_ShowInit();
}
function tt_ReadCmds(a)
{
	var i;

	// First load the global config values, to initialize also values
	// for which no command has been passed
	i = 0;
	for(var j in config)
		tt_aV[i++] = config[j];
	// Then replace each cached config value for which a command has been
	// passed (ensure the # of command args plus value args be even)
	if(a.length & 1)
	{
		for(i = a.length - 1; i > 0; i -= 2)
			tt_aV[a[i - 1]] = a[i];
		return true;
	}
	tt_Err("Incorrect call of Tip() or TagToTip().\n"
			+ "Each command must be followed by a value.");
	return false;
}
function tt_AdaptConfig1()
{
	tt_ExtCallFncs(0, "LoadConfig");
	// Inherit unspecified title formattings from body
	if(!tt_aV[TITLEBGCOLOR].length)
		tt_aV[TITLEBGCOLOR] = tt_aV[BORDERCOLOR];
	if(!tt_aV[TITLEFONTCOLOR].length)
		tt_aV[TITLEFONTCOLOR] = tt_aV[BGCOLOR];
	if(!tt_aV[TITLEFONTFACE].length)
		tt_aV[TITLEFONTFACE] = tt_aV[FONTFACE];
	if(!tt_aV[TITLEFONTSIZE].length)
		tt_aV[TITLEFONTSIZE] = tt_aV[FONTSIZE];
	if(tt_aV[CLOSEBTN])
	{
		// Use title colors for non-specified closebutton colors
		if(!tt_aV[CLOSEBTNCOLORS])
			tt_aV[CLOSEBTNCOLORS] = new Array("", "", "", "");
		for(var i = 4; i;)
		{--i;
			if(!tt_aV[CLOSEBTNCOLORS][i].length)
				tt_aV[CLOSEBTNCOLORS][i] = (i & 1) ? tt_aV[TITLEFONTCOLOR] : tt_aV[TITLEBGCOLOR];
		}
		// Enforce titlebar be shown
		if(!tt_aV[TITLE].length)
			tt_aV[TITLE] = " ";
	}
	// Circumvents broken display of images and fade-in flicker in Geckos < 1.8
	if(tt_aV[OPACITY] == 100 && typeof tt_aElt[0].style.MozOpacity != tt_u && !Array.every)
		tt_aV[OPACITY] = 99;
	// Smartly shorten the delay for fade-in tooltips
	if(tt_aV[FADEIN] && tt_flagOpa && tt_aV[DELAY] > 100)
		tt_aV[DELAY] = Math.max(tt_aV[DELAY] - tt_aV[FADEIN], 100);
}
function tt_AdaptConfig2()
{
	if(tt_aV[CENTERMOUSE])
		tt_aV[OFFSETX] -= ((tt_w - (tt_aV[SHADOW] ? tt_aV[SHADOWWIDTH] : 0)) >> 1);
}
// Expose content globally so extensions can modify it
function tt_MkTipContent(a)
{
	if(tt_t2t)
	{
		if(tt_aV[COPYCONTENT])
			tt_sContent = tt_t2t.innerHTML;
		else
			tt_sContent = "";
	}
	else
		tt_sContent = a[0];
	tt_ExtCallFncs(0, "CreateContentString");
}
function tt_MkTipSubDivs()
{
	var sCss = 'position:relative;margin:0px;padding:0px;border-width:0px;left:0px;top:0px;line-height:normal;width:auto;',
	sTbTrTd = ' cellspacing=0 cellpadding=0 border=0 style="' + sCss + '">'
			+ ''
			+ tt_aV[TITLE]
			+ ''
			+ (tt_aV[CLOSEBTN] ?
				('')
				: '')
			+ ''
				+ ''
				+ tt_aV[CLOSEBTNTEXT]
				+ '