var offsetfrommouse=[12,17]; //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.

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

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

if (document.getElementById || document.all){
	document.write('<div id="float">');
	document.write('</div>');
}

function hidetrail(){
	gettrailobj().visibility="hidden"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

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


function showtrail(imagename,wid,hei){

	height = 375;
	
	if (height > 0){
		currentimageheight = height;
	}

	currentimageheight = 100;
	document.onmousemove=followmouse;



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

	gettrailobjnostyle().innerHTML = newHTML;

	gettrailobj().visibility="visible";

}


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(document.body.offsetHeight, window.innerHeight)


	if (typeof e != "undefined"){
		if (docwidth - e.pageX < 200){
			xcoord = e.pageX - xcoord - 286; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 195)){
			ycoord += e.pageY - Math.max(0,(300 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 200){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 286; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 195)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(300 + 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)

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

}