/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

/**
 * Then copied from iStockPhoto and then modified even more.
 *
 * Modified to allow up to two images, side by side.
 */

var offsetfrommouse=[15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.
var divheight = 0;
var divwidth = 0;
//var adjusty = 110;
var adjusty = 0;

if (document.getElementById || document.all){
	document.write('<div id="trailimageid" style="position: absolute; display: none; left: 0px; top: 0px; z-index: 200;" class=\"blacktxt\">');
	document.write('</div>');
}

function gettrailobj(){
if (document.getElementById)
return document.getElementById("trailimageid").style
else if (document.all)
return document.all.trailimagid.style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("trailimageid")
else if (document.all)
return document.all.trailimagid
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function glossary_showtrail(trailhtml){

	document.onmousemove = followmouse;
	
	newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888;">';
	newHTML = newHTML + '<div align="left" style="padding: 2px 2px 2px 2px;">';
	newHTML = newHTML + unescape(trailhtml);
	newHTML = newHTML + '</div>';
	newHTML = newHTML + '</div>';
	
	// Set and show div
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
	
	// Get div dimensions for adjustments.
	if(gettrailobj().offsetHeight){
		divheight = gettrailobj().offsetHeight;
		divwidth = gettrailobj().offsetWidth;
	}else if(typeof(gettrailobj().style) != "undefined" && gettrailobj().style.pixelHeight){
		divheight = gettrailobj().style.pixelHeight;
		divwidth = gettrailobj().style.pixelWidth;
	}
}


function glossary_hidetrail(){
	gettrailobj().innerHTML = " ";
	gettrailobj().display="none"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]
	
	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)
	
	if (typeof e != "undefined"){
		if (docwidth - e.pageX < 380){
			xcoord = e.pageX - xcoord - divwidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (divheight + adjusty)){
			ycoord += e.pageY - Math.max(0,(adjusty + divheight + e.pageY - docheight - truebody().scrollTop));
			//ycoord += truebody().scrollTop;
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		// IE 5/6
		if (docwidth - event.clientX < 380){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - divwidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (divheight + adjusty)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(adjusty + divheight + event.clientY - docheight));
			//ycoord += truebody().scrollTop;
			//alert(truebody().scrollTop);
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
		if(ycoord < 0) { ycoord = ycoord*-1; }
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
}