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

-- Customized for FindYourLogo by Roy Berkeveld
*/

var offsetfrommouse = [15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var currentimageheight = 225;	// maximum image size.

if (document.getElementById || document.all)
	document.write('<div id="trailimageid"></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 showtrail(imagename){
	document.onmousemove=followmouse;
	gettrailobjnostyle().innerHTML = '<img src="' + imagename + '" />';
	gettrailobj().visibility="visible";
}


function hidetrail(){
	gettrailobj().visibility="hidden"
	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? truebody().clientHeight : Math.min(window.innerHeight)

	if (typeof e != "undefined") {
		if (docwidth - e.pageX < 310)
			xcoord = e.pageX - xcoord - 310; // Move to the left side of the cursor
		else
			xcoord += e.pageX;
		if (docheight - e.pageY < (currentimageheight + 30))
			ycoord += e.pageY - Math.max(0,(30 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		else
			ycoord += e.pageY;
	} else if (typeof window.event != "undefined") {
		if (docwidth - event.clientX < 310)
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 310; // Move to the left side of the cursor
		else 
			xcoord += truebody().scrollLeft+event.clientX
		if (docheight - event.clientY < (currentimageheight + 30))
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(30 + currentimageheight + event.clientY - docheight));
		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"

}