/***********************************************
* 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 && !dom) ? true : false;

//alert('document.getElementById = '+document.getElementById+' document.all = '+document.all+' dom = '+dom+' window.opera = '+window.opera+' ns5 = '+ns5+' ie5 = '+ie5+' ie4 = '+ie4);

var origWidth, origHeight;

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

///////////////////////  CUSTOMIZE HERE   ////////////////////
// settings for tooltip 
var offX= 20;	// how far from mouse to show tip
var offY= 12; 
// 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

// 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('images/Catalogue/Anniversaries/AN-001L.gif',166,249);
/*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];
//  }
//}

////////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//		Global variables for tooltip. 
//		Set styles
//		Set up mousemove capture if tipFollowMouse set true.
////////////////////////////////////////////////////////////
var tooltip, tipcss;

/////////////////////////////////////////////////
//  doTooltip function
//			Assembles content for tooltip and writes 
//			it to tipDiv
/////////////////////////////////////////////////
var t1,t2;	// for setTimeouts
var tipOn = false;	// check if over tooltip link
var tipFollowMouse= false;	

function doTooltip(evt,img_location,img_width,img_height) {
	tooltip = (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
	tipcss = tooltip.style;
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;

	if (ie4||ie5||ns5) {
		//tooltip.innerHTML = '<img src="' + messages[num][0] + '" width = ' + messages[num][1] + ' height = ' + messages[num][2] + ' align="middle" hspace="10" vspace="10" />' ;
		tooltip.innerHTML = "<img src=" + img_location + " width = " + img_width + " height = " + img_height + " align='middle' hspace=10 vspace=10 />" ;
		tipcss.width = img_width + 20 + "px";
		tipcss.height = img_height + 20 + "px";
		tipcss.backgroundColor = "white";
		tipcss.borderColor = "gray";
		tipcss.borderStyle = "double";
	}
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",100);
}

var mouseX, mouseY;

/////////////////////////////////////////////////////////////
//  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>')