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

var offsetfrommouse=[15,15];
var wid=1
var hei=1

if (document.getElementById || document.all)
document.write('<div id="trailimageid" style="position:absolute;visibility:hidden;left:0px;top:-500px;width:1px;height:1px;border:1px solid #999999;background:#EEEEEE;"><img id="ttimg" src="images/bg_picture.gif" /></div>')


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

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

function hidetrail() {
	document.onmousemove=""
	document.getElementById('ttimg').src='images/bg_picture.gif'
	gettrailobj().visibility="hidden"
	gettrailobj().left=-500
	gettrailobj().top=0
}


function showtrail(width,height,file) {

	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1)
	{
		wid=width
		hei=height
		
		document.getElementById('ttimg').src=file
		document.onmousemove=followmouse
		gettrailobj().visibility="visible"
		gettrailobj().width=wid+"px"
		gettrailobj().height=hei+"px"

	}
}


function followmouse(e) {

	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1) {

		var xcoord=offsetfrommouse[0]
		var ycoord=offsetfrommouse[1]

		if (typeof e != "undefined") {

			xcoord+=e.pageX
			ycoord+=e.pageY
		}
		else if (typeof window.event !="undefined") {

			xcoord+=truebody().scrollLeft+event.clientX
			ycoord+=truebody().scrollTop+event.clientY
		}

		var pagewidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
		var pageheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)

		if (xcoord+wid+3>pagewidth) xcoord=xcoord-wid-(offsetfrommouse[0]*2)
		if (ycoord-truebody().scrollTop+hei>truebody().clientHeight) ycoord=ycoord-hei-offsetfrommouse[1];

		gettrailobj().left=xcoord+"px"
		gettrailobj().top=ycoord+"px"

	}

}