/***********************************************
* Image w/ description tooltip- By Dynamic Web Coding (www.dyn-web.com)
* Copyright 2002-2007 by Sharon Paine
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

/* IMPORTANT: Put script after tooltip div or
put tooltip div just before </BODY>. */

var dom = (document.getElementById) ? true : false;
var ns5 = (!document.all && dom || window.opera) ? true: false;
var ie5 = ((navigator.userAgent.indexOf("MSIE")>-1) && dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ie4 && !ie5 && !ie6 && !ie7 && !dom) ? true : false;

var origWidth, origHeight;

// avoid error of passing event object in older browsers
if (nodyn) { event = "nope" }

///////////////////////  CUSTOMIZE HERE   ////////////////////
// settings for tooltip
// Do you want tip to move when mouse moves over link?
var tipFollowMouse= false;
// Be sure to set tipWidth wide enough for widest image
var tipWidth= 200;
var offX= 10;	// how far from mouse to show tip
var offY= 12;
var tipFontFamily= "Verdana, arial, helvetica, sans-serif";
var tipFontSize= "8pt";
// set default text color and background color for tooltip here
// individual tooltips can have their own (set in messages arrays)
// but don't have to
var tipFontColor= "";
var tipBgColor= "";
var tipBorderColor= "#ffffff";
var tipBorderWidth= 4;
var tipBorderStyle= "solid";
var tipPadding= 0;

// tooltip content goes here (image, description, optional bgColor, optional textcolor)
var messages = new Array();
// multi-dimensional arrays containing:
// image and text for tooltip
// optional: bgColor and color to be sent to tooltip
messages[0] = new Array('red_balloon.gif','Here is a red balloon on a white background',"#FFFFFF");
messages[1] = new Array('duck2.gif','Here is a duck on a light blue background.',"#DDECFF");
messages[2] = new Array('test.gif','Test description','black','white');

////////////////////  END OF CUSTOMIZATION AREA  ///////////////////

// preload images that are to appear in tooltip
// from arrays above
if (document.images) {
	var theImgs = new Array();
	for (var i=0; i<messages.length; i++) {
		theImgs[i] = new Image();
		theImgs[i].src = messages[i][0];
	}
}

// to layout image and text, 2-row table, image centered in top cell
// these go in var tip in doTooltip function
// startStr goes before image, midStr goes between image and text
var startStr = '<img src="';
var midStr = '" border="0">';
var endStr = '';

////////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//	Global variables for tooltip.
//	Set styles
//	Set up mousemove capture if tipFollowMouse set true.
////////////////////////////////////////////////////////////
var tooltip, tipcss;
function initTip() {
	if (nodyn) return;
	tooltip = (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
	tipcss = tooltip.style;
	if (ie4||ie5||ns5) {	// ns4 would lose all this on rewrites
		tipcss.width = tipWidth+"px";
		tipcss.fontFamily = tipFontFamily;
		tipcss.fontSize = tipFontSize;
		tipcss.color = tipFontColor;
		tipcss.backgroundColor = tipBgColor;
		tipcss.borderColor = tipBorderColor;
		tipcss.borderWidth = tipBorderWidth+"px";
		tipcss.padding = tipPadding+"px";
		tipcss.borderStyle = tipBorderStyle;
	}
	if (tooltip&&tipFollowMouse) {
		document.onmousemove = trackMouse;
	}
}

window.onload = initTip;

/////////////////////////////////////////////////
//  doTooltip function
//	Assembles content for tooltip and writes
//	it to tipDiv
/////////////////////////////////////////////////
var t1,t2;	// for setTimeouts
var tipOn = false;	// check if over tooltip link
function doTooltip(evt, num, imgsrc) {
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
	// set colors if included in messages array
	if (messages[num][2])	var curBgColor = messages[num][2];
	else curBgColor = tipBgColor;
		if (messages[num][3])	var curFontColor = messages[num][3];
		else curFontColor = tipFontColor;
			if (ie4||ie5||ns5) {
				var tip = startStr + imgsrc + midStr + endStr;
				tipcss.backgroundColor = curBgColor;
				tooltip.innerHTML = tip;

			}
			if (!tipFollowMouse) positionTip(evt);
			else t1=setTimeout("tipcss.visibility='visible'",100);
			}

			var mouseX, mouseY;
			function trackMouse(evt) {
				standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
				mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;
				mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;
				if (tipOn) positionTip(evt);
			}

			/////////////////////////////////////////////////////////////
			//  positionTip function
			//	If tipFollowMouse set false, so trackMouse function
			//	not being used, get position of mouseover event.
			//	Calculations use mouseover event position,
			//	offset amounts and tooltip width to position
			//	tooltip within window.
			/////////////////////////////////////////////////////////////
			function positionTip(evt) {
				if (!tipFollowMouse) {
					standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
					mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;
					mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;
				}
				// tooltip width and height
				var tpWd = (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;
				var tpHt = (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;
				// document area in view (subtract scrollbar width for ns)
				var winWd = (ns5)? window.innerWidth-20+window.pageXOffset: standardbody.clientWidth+standardbody.scrollLeft;
				var winHt = (ns5)? window.innerHeight-20+window.pageYOffset: standardbody.clientHeight+standardbody.scrollTop;
				// check mouse position against tip and window dimensions
				// and position the tooltip
				if ((mouseX+offX+tpWd)>winWd)
				tipcss.left = mouseX-(tpWd+offX)+"px";
				else tipcss.left = mouseX+offX+"px";
					if ((mouseY+offY+tpHt)>winHt)
					tipcss.top = winHt-(tpHt+offY)+"px";
					else tipcss.top = mouseY+offY+"px";
						if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);
					}

					function hideTip() {
						if (!tooltip) return;
						t2=setTimeout("tipcss.visibility='hidden'",100);
						tipOn = false;
					}

					document.write('<div id="tipDiv" style="position:absolute; visibility:hidden; z-index:100"></div>')