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

var itemWidth=300;
var offsetfrommouse=[25,25]; //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 currentimageheight = 150;	// maximum image size.

if (document.getElementById || document.all){
	document.write('<div id="trailimageid">');
	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 showtrail(imagename,title,width,height){
	document.onmousemove=followmouse;

	newHTML = '<div style="background-color: #FFF; z-index:200; border: 1px solid #000080; width:' + width + 'px; height:' + height + 'px;">';

	newHTML = newHTML + '<div align="center" style="position:relative;">';
	newHTML = newHTML + '<img src="' + imagename + '" border="0" width=" ' + width + '" height="' + height + '"/></div>';

	newHTML = newHTML + '</div>';
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().visibility="visible";
}


function hidetrail(){
	gettrailobj().visibility="hidden";
	gettrailobj().innerHTML = " ";
	document.onmousemove="";
         gettrailobjnostyle().innerHTML = "";
}

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

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 < 340){
			xcoord = e.pageX - xcoord - 290; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 10)){
			ycoord += e.pageY - Math.max(0,(currentimageheight + e.pageY - docheight - truebody().scrollTop + 150));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 350){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 290; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 10)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(currentimageheight + event.clientY - docheight + 150));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	if(ycoord < 0) { ycoord = ycoord*-1; }
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}