/*
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 currentimagewidth = 500;
var currentimageheight = 500;

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 showtraillite(imagename, width, height) {
	
	if (width > 0) currentimagewidth=width;
	if (height > 0) currentimageheight=height;
	
	document.onmousemove=followmouse;
	
	newHTML =  '<div style="background-color: #FFF; border: 1px solid #d7d6b7;">';
	newHTML += '<img src="' + imagename + '" border="0"/>';
	newHTML += '</div>';
	
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
}

function showtrail(imagename, title, description, width, height) {
	
	if (width > 0) currentimagewidth=width;
	if (height > 0) currentimageheight=height;
	
	document.onmousemove=followmouse;
	
	newHTML =  '<div style="padding: 2px; background-color: #FFF; border: 1px dotted #d7d6b7;">';
	newHTML += '<h3>' + title + '</h3>';
	newHTML += '<p>' + description + '</p>';
	newHTML += '<div align="center" style="padding: 8px 2px 2px 2px;">';
	newHTML += '<img src="' + imagename + '" border="0"/></div>';
	newHTML += '</div>';
	
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
}

function hidetrail() {
	
	gettrailobj().innerHTML = " ";
	gettrailobj().display = "none";
	document.onmousemove = "";
	gettrailobj().left = "-600px";
}

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) : window.innerHeight;
	
	if (typeof e != "undefined") {
		
		if (docwidth - e.pageX < (currentimagewidth + 32)) {
			xcoord = e.pageX - xcoord - currentimagewidth; // Move to the left side of the cursor
		}
		else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 78)) {
			ycoord += e.pageY - Math.max(0, (78 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		}
		else {
			ycoord += e.pageY;
		}

	}
	else if (typeof window.event != "undefined") {
		
		if (docwidth - event.clientX < (currentimagewidth + 32)) {
			xcoord = event.clientX + truebody().scrollLeft - xcoord - currentimagewidth; // Move to the left side of the cursor
		} 
		else {
			xcoord += truebody().scrollLeft+event.clientX;
		}
		if (docheight - event.clientY < (currentimageheight + 32)) {
			ycoord += event.clientY + truebody().scrollTop - Math.max(0, (32 + currentimageheight + event.clientY - docheight));
		}
		else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

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