/* 
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,-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 = 500;	// maximum image size.
var defaultimagewidth = 500;	// 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);",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)
	var docwidth=truebody().clientWidth || window.innerWidth;
	var docheight=truebody().clientHeight || 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+=30
		height+=55
		defaultimageheight = height
		defaultimagewidth = width
	
		document.onmousemove=followmouse; 

		
		newHTML = '<div class="border_preview" style="width:'+  width +'px;height:'+ height +'px; "  >'
		newHTML = newHTML + '<div id="loader_container"><div id="loader"><div align="center">Loading preview image...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
		newHTML = newHTML + '<h2 class="title_h2">' + ' '+title + '</h2>'
		
    	newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"></div>';
		newHTML = newHTML + '</div>'; 
		
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}		
		gettrailobjnostyle().innerHTML = newHTML;
		
//		defaultimagewidth=document.getElementById('border_preview').offsetWidth+2;
//		defaultimageheight=document.getElementById('border_preview').offsetHeight+2;
	}
}
function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]


	var docwidth=truebody().clientWidth || window.innerWidth;
	var docheight=truebody().clientHeight || window.innerHeight;

	var mousex,mousey;
	if (e) {
		mousex=e.pageX;
		mousey=e.pageY;
	} else if (window.event) {
		mousex=event.clientX;
		mousey=event.clientY;
	}

	if (docwidth-mousex<defaultimagewidth+2*offsetfrommouse[0]) 
		xcoord=mousex-xcoord-defaultimagewidth;
	else
		xcoord+=mousex;
/*	if (defaultimagewidth>docwidth)
		{xcoord=truebody().scrollLeft;}
	else if (mousex-offsetfrommouse[0]-defaultimagewidth>=truebody().scrollLeft)
		{xcoord=mousex-offsetfrommouse[0]-defaultimagewidth;}
	else if (mousex+offsetfrommouse[0]+defaultimagewidth>=truebody().scrollLeft+docwidth-2)
		{xcoord=truebody().scrollLeft+docwidth-defaultimagewidth-2;}
	else
		{xcoord=mousex+offsetfrommouse[0];}*/
/*	if (mousex<truebody().scrollLeft+docwidth/2) 
		xcoord=mousex+offsetfrommouse[0];
	else
		xcoord=mousex-defaultimagewidth-offsetfrommouse[0];*/

	if (defaultimageheight>=docheight) 
		{ycoord=truebody().scrollTop;}
	else if (mousey+offsetfrommouse[1]<truebody().scrollTop)
		{ycoord=truebody().scrollTop;}
	else if (mousey+offsetfrommouse[1]+defaultimageheight>docheight+truebody().scrollTop-2)
		{ycoord=docheight-defaultimageheight+truebody().scrollTop-2;}
	else
		{ycoord=mousey+offsetfrommouse[1];}
	
	

	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
	gettrailobj().display="block";

}