var offsetfrommouse=[15,25]; //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 t_id = setInterval(animate,20);

var pos=0;

var dir=2;

var len=0;



function animate()

{

var elem = document.getElementById('progress');

if(elem != null) {

if (pos==0) len += dir;

if (len>32 || pos>79) pos += dir;

if (pos>79) len -= dir;

if (pos>79 && len==0) pos=0;

elem.style.left = pos;

elem.style.width = len;

}

}



function remove_loading() {

this.clearInterval(t_id);

var targelem = document.getElementById('loader_container');

targelem.style.display='none';

targelem.style.visibility='hidden';

var t_id = setInterval(animate,60);

}









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)


	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: '';

		var coef=1; 	

		//width+=30;

		//height+=55;

		

		if(width>500 || height>500) 

		{

			if(width>height)

			  coef= 500/width;

			else

			  coef=500/height;

			width=width*coef;

			height=height*coef ;

		}

		

		

		/*var width1= width + 30;

		var height1 = height + 55;*/

		var width1= width + 30;

		var height1 = height + 95;

		

		defaultimageheight = height1;

		defaultimagewidth = width1;

	

		document.onmousemove=followmouse; 



		

		newHTML = '<div class="border_preview"><h2 class="title_h2">' + ' '+title + '</h2><div id="loader_container"><div id="loader"><div align="center">Loading image...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';


    	newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" height="'+  height +'" width="'+  width +'"></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;

		gettrailobj().display="block";

	}

}

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 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+"px"



}