/*
Image w/ description tooltip- By Dynamic Web Coding (www.dyn-web.com)
Copyright 2002 by Sharon Paine
Visit http://www.dynamicdrive.com for this script
*/

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

/* MODIFIED: IE6 error: document.documentElement instead of document.body
   AUTHOR: Terry Donohue
   DATE: 11/12/2006
*/

/* MODIFIED: Improve tooltip popup location.  When web page is auto-centered and viewed
		high resolution screen the calculated tooltip position is incorrect.
		Position calculations have been modified to fit in 780px window even
		when screen size larger.
   AUTHOR: Terry Donohue
   DATE: 12/14/2006
*/

var dom = (document.getElementById) ? true : false;
var ns5 = ((navigator.userAgent.indexOf("Gecko")>-1) && dom) ? true: false;
var ie5 = ((navigator.userAgent.indexOf("MSIE")>-1) && dom) ? true : false;
var ns4 = (document.layers && !dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ns4 && !ie4 && !ie5) ? true : false;

// resize fix for ns4
var origWidth, origHeight;
if (ns4) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

// 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= true;	
// Be sure to set tipWidth wide enough for widest image
var tipWidth= 400;
var offX= 15;	// how far from mouse to show tip
var offY= 0; 
var tipFontFamily= "arial, verdana, tahoma, serif";
var tipFontSize= "10pt";
// 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= "#444444";
var tipBgColor= "#FFFFFF"; 
var tipBorderColor= "#e5eaee";
var tipBorderWidth= 1;
var tipBorderStyle= "solid";
var tipPadding= 5;
var contentWd = 780;


////////////////////  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];
//  }
//}


////////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//		Global variables for tooltip. 
//		Set styles for all but ns4. 
//		Set up mousemove capture if tipFollowMouse set true.
////////////////////////////////////////////////////////////
var tooltip, tipcss;
function initTip() {
	if (nodyn) return;
	tooltip = (ns4)? document.tipDiv.document: (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
	tipcss = (ns4)? document.tipDiv: 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) {
		if (ns4) document.captureEvents(Event.MOUSEMOVE);
		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,img) {
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
	// set colors if included in messages array
	curFontColor = tipFontColor;
	curBgColor = tipBgColor;
	if (ns4) {
		var tip = '<table><tbody><tr><td>'+ '<table><tbody><tr><td style="width:100%; text-align:center;"><img src="'+img+'" border="0"></td></tr></tbody></table></td></tr></tbody></table>';
		tooltip.write(tip);
		tooltip.close();
	} else if (ie4||ie5||ns5) {
                var tip = '<table><tbody><tr><td style="width:100%; text-align:center;"><img src="'+img+'" border="0"></td></tr></tbody></table>';
		tipcss.backgroundColor = curBgColor;
	 	tooltip.innerHTML = tip;
	}
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",100);
}

var mouseX, mouseY;
function trackMouse(evt) {
	if (ns4||ns5)  {
		mouseX = evt.pageX;
		mouseY = evt.pageY;
	}
	else  {
		if(document.documentElement)  {
			mouseX = window.event.clientX + document.documentElement.scrollLeft;
			mouseY = document.documentElement.scrollTop;
		}
		else  {
			mouseX = window.event.clientX + document.body.scrollLeft;
			mouseY = window.event.clientY + document.body.scrollTop;
		}
	}
	//mouseX = (ns4||ns5)? evt.pageX: window.event.clientX + document.body.scrollLeft;
	//mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + document.body.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) {
		if (ns4||ns5)  {
			mouseX = evt.pageX;
			mouseY = evt.pageY;
		}
		else  {
			if(document.documentElement)  {
				mouseX = window.event.clientX + document.documentElement.scrollLeft;
				mouseY = window.event.clientY + document.documentElement.scrollTop;
			}
			else  {
				mouseX = window.event.clientX + document.body.scrollLeft;
				mouseY = window.event.clientY + document.body.scrollTop;
			}
		}
	}
	// tooltip width and height
	var tpWd = (ns4)? tooltip.width: (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;
	var tpHt = (ns4)? tooltip.height: (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;
	//alert("offsetWidth = " + tooltip.offsetWidth + " offsetHeight = " + tooltip.offsetHeight);
	//alert("tpWd = " + tpWd + " tpHt = " + tpHt);
	// document area in view (subtract scrollbar width for ns)

	var winWd;
	var winWt;
	if (ns4||ns5)  {
		winWd = window.innerWidth-20+window.pageXOffset;
		winHt = window.innerHeight-20+window.pageYOffset;
	}
	else  {
		if(document.documentElement)  {
			winWd = document.body.clientWidth + document.documentElement.scrollLeft;
			winHt = document.body.clientHeight + document.documentElement.scrollTop;
		}
		else  {
			winWd = document.body.clientWidth + document.body.scrollLeft;
			winHt = document.body.clientHeight + document.body.scrollTop;
		}
	}
	//var winWd = (ns4||ns5)? window.innerWidth-20+window.pageXOffset: document.body.clientWidth+document.body.scrollLeft;
	//var winHt = (ns4||ns5)? window.innerHeight-20+window.pageYOffset: document.body.clientHeight+document.body.scrollTop;
	//alert("winWd = " + winWd + " winHt = " + winHt);
	// check mouse position against tip and window dimensions
	// and position the tooltip 
	if ((mouseX+offX+tpWd)>winWd) {
		tipcss.left = (ns4)? mouseX-(tpWd+offX)-((winWd-contentWd)/2): mouseX-(tpWd+offX)-((winWd-contentWd)/2)+"px";
                //alert("Calc 1");
		//alert("mouseX=" + mouseX + " tpWd=" + tpWd + " offX=" + offX + " tipcss.left=" + tipcss.left);
        }
	else  {
		//tipcss.left = (ns4)? mouseX+offX: mouseX+offX+"px";
		tipcss.left = (ns4)? (mouseX+offX)-((winWd-contentWd)/2): (mouseX+offX)-((winWd-contentWd)/2)+"px";
		//alert("Calc 2");
		//alert("mouseX=" + mouseX + " offX=" + offX + " tpWd=" + tpWd + " winWd=" + winWd);
	}

	if ((mouseY+offY+tpHt)>winHt)  {
		//alert("mouseY = " + mouseY + " offY = " + offY + " tpHt = " + tpHt + " winHt = " + winHt + " evt.pageY = " + evt.pageY);
		tipcss.top = (ns4)? winHt-(tpHt+offY): winHt-(tpHt+offY)+"px";
		//alert("Calc 3");
	}
	else  {
		//alert("mouseY = " + mouseY + " offY = " + offY + " tpHt = " + tpHt + " winHt = " + winHt + " window.event.clientY = " + window.event.clientY + " document.documentElement.scrollTop = " + document.documentElement.scrollTop);
		tipcss.top = (ns4)? mouseY+offY: mouseY+offY+"px";
		//alert("Calc 4");
	}
	if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);
	//alert("tipTop = " + tipcss.top + " tipLeft = " + tipcss.left);
}

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