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

var offsetfrommouse=[10,-20] //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 = 380;	// 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 truebody(){
	return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function showtrail(imagename,width,height){
	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove=followmouse;

	newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888;">';
	newHTML = newHTML + '<div align="center" style="padding: 2px 0px 2px 0px;">';
	newHTML = newHTML + '<img src="installs/' + imagename + '" border="0" width="'+width+'px" height="'+height+'px"></div>';
	newHTML = newHTML + '</div>';

	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
	gettrailobj().position="absolute";
}

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

}

function followmouse(e){
	var imgheight = parseInt(currentimageheight);
	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 - 400; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (imgheight + 112)){
			ycoord += e.pageY - Math.max(0,(112 + imgheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 380){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (imgheight + 112)){
			ycoord = event.clientY + truebody().scrollTop - Math.max(0,(112 + imgheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

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

//document.onmousemove=followmouse

//if (displayduration>0)
//	setTimeout("hidetrail()", displayduration*1000)