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



var offsetfrommouse=[-480,-250]; //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 defaultimageheight = 358;	// maximum image size.
var defaultimagewidth = 358;	// 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="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,width,height){
	i = imagename
	t = title
	w = width
	h = height
	timer = setTimeout("show('"+i+"',t,w,h);",100);
}
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)

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=0
		height+=0
		defaultimageheight = height;
		defaultimagewidth = width;
	
		document.onmousemove=followmouse; 

		

		
		newHTML = '<div id="loader_container"></div>';

		//newHTML = newHTML + '<h2 class="title_h2">' + ' '+title + '</h2>'
		//newHTML = newHTML + '<div style="font-size:12px;margin:10px 0 0 0;text-align:center;">' + title + '</div>'
		
    	newHTML = newHTML + '<img src="' + imagename + '" height= "' + height + '" width= "' + width + '" border="0">';
		//newHTML = newHTML + '</div>'; 
		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
		//alert([width,height]);
	}
}

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 (e.pageX < defaultimagewidth){			
			
			xcoord = e.pageX + 30; // Move to the left side of the cursor			
		} else {
			
			xcoord = e.pageX - defaultimagewidth - 20;
		}
		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 - defaultimageheight/2;
		}

	} else if (typeof window.event != "undefined"){
		if (event.clientX < defaultimagewidth){
			
			xcoord = event.clientX + 30; // Move to the left side of the cursor
		} else {
			xcoord = truebody().scrollLeft+event.clientX - defaultimagewidth - 20
		}
		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 - defaultimageheight/2;
		}
	}
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}