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

// Image x,y offsets from cursor position in pixels
var offsetfrommouse=[15,15];

// Duration in seconds image should remain visible. 0 for always.
var displayduration=0;

// Maximum image size.
var currentimageheight = 350;	

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()
{
	if( ! window.opera && document.compatMode &&
		document.compatMode!="BackCompat")
		return document.documentElement;
	else
		return document.body;
}

function showtrail(html)
{
	document.onmousemove=followmouse;

	// Wrap provided html in a div
	newHTML = '<div id="trailinner">';
	newHTML = newHTML + html;
	newHTML = newHTML + '</div>';

	gettrailobjnostyle().innerHTML = newHTML;

	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?
		Math.min(truebody().scrollHeight, truebody().clientHeight) :
		Math.min(window.innerHeight)

	if (typeof e != "undefined")
	{
		if (docwidth - e.pageX < 380)
		{
			// Move to the left side of the cursor
			xcoord = e.pageX - xcoord - 400;
		}
		else
		{
			xcoord += e.pageX;
		}
		
		if (docheight - e.pageY < (currentimageheight + 250))
		{
			ycoord += e.pageY - Math.max(0,(250 + currentimageheight +
				e.pageY - docheight - truebody().scrollTop));
		}
		else
		{
			ycoord += e.pageY;
		}
	}
	else if (typeof window.event != "undefined")
	{
		if (docwidth - event.clientX < 380)
		{
			// Move to the left side of the cursor
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; 
		}
		else
		{
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 250))
		{
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(250 +
				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"
}