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

var offsetfrommouse=[15,10]; 
var displayduration=0; 

var defaultimageheight = 80;	// maximum image size.
var defaultimagewidth = 400;	// maximum image size.

var timer;

function gettrailobj()
{
    if (document.getElementById)
    return document.getElementById("preview_div").style
}

function gettrailobjnostyle()
{
    if (document.getElementById)
    {
        return document.getElementById("preview_div")
    }
}

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

function hidetrail()
{	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-1000px"
	clearTimeout(timer);
}

function showtrail(imagename,title,width,height)
{
	i = imagename;
	t = title;
	w = width;
	h = height;
	timer = setTimeout("show('"+i+"','"+t+"',"+w+","+h+");",200);
}

function show(imagename,title,width,height)
{
    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0];
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight);
	( width == 0 ) ? width = defaultimagewidth: '';
	( height == 0 ) ? height = defaultimageheight: '';
	var coef=1; 	
		
	if(width>200 || height>80) 
	{
		if(width>height)
		  coef= 200/width;
		else
	    coef=80/height;
	}
	
	var width1= width + 30;
	var height1 = height + 95;
	defaultimageheight = height;
	defaultimagewidth = width;
	
	document.onmousemove=followmouse; 

    height="80";
    width="400";
		
	newHTML = '<div class="border_preview"><div id="loader_container"><div id="loader"><div id="loader_bg"><div id="progress"> </div></div></div></div>';
   	newHTML = newHTML + '<div class="preview_temp_load"><img src="' + imagename + '" border="0"></div>';
	newHTML = newHTML + '</div>'; 
		
	if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 )
	{}		
    gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="block";
}

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 < defaultimagewidth + 2*offsetfrommouse[0])
		{
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		}
		else 
		{
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1])
		{
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} 
		else 
		{
			ycoord += e.pageY;
		}

	} 
	else if (typeof window.event != "undefined")
	{
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0])
		{
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		}
		else 
		{
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1]))
		{
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} 
		else 
		{
			ycoord += truebody().scrollTop + event.clientY;
		}
	}
	gettrailobj().left = xcoord +"px"
	gettrailobj().top = ycoord - 100 +"px"
}