/*
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]; 	//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 = 270; 	// 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, title, description, showthumb, height){
	if (height > 0){
		currentimageheight = height;
	}
	document.onmousemove=followmouse;
	newHTML = '<div style="padding:4px; background-color:#ffffff; border:1px solid #333333; font-family:Verdana, Sans-Serif; font-size:11px;">';
	
	if (showthumb > 0){
		newHTML = newHTML + '<div align="center" style="border:1px solid #666666;"><img src="' + imagename + '" border="0" width="250"></div>';
	}
	newHTML = newHTML + '<span style="font-weight:bold;">'+ title +'</span><br/><span style="line-height:5px;"><br/></span>';
	newHTML = newHTML + description;
	newHTML = newHTML + '</div>';
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="block";
}

function hidetrail(){
	gettrailobj().display="none";
	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 ? 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 < (currentimageheight + 110)){
			ycoord += e.pageY - Math.max(0,(110 + currentimageheight + 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 < (currentimageheight + 110)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(110 + 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";
}