var offsetfrommouse=[15,0]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=1; //duration in seconds image should remain visible. 0 for always.
var currentimageheight = 380;	// maximum image size.
var t_id = 0;
var currentimagewidth = 430;	// maximum image size.
var timer;

var pos=0;
var dir=2;
var len=0;

function getSize() {
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		myWidth = window.innerWidth; myHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth ||document.documentElement.clientHeight ) ) {
		myWidth = document.documentElement.clientWidth; myHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		myWidth = document.body.clientWidth; myHeight = document.body.clientHeight;
	}
	return [myWidth,myHeight];
}
function getScrollXY() {
	var scrOfX = 0, scrOfY = 0;
	if( typeof( window.pageYOffset ) == 'number' ) {
		scrOfY = window.pageYOffset; scrOfX = window.pageXOffset;
	} else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
		scrOfY = document.body.scrollTop; scrOfX = document.body.scrollLeft;
	} else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
		scrOfY = document.documentElement.scrollTop; scrOfX = document.documentElement.scrollLeft;
	}
	return[scrOfX,scrOfY];
}

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

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


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


function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-5000px"
	clearTimeout(timer);
}

function showtrail(imagename,title,showthumb){
	i = imagename
	t = title
	s = showthumb
	timer = setTimeout("show('"+i+"',t,s);",200);
}
function show(imagename,title,showthumb){
	
	document.onmousemove=followmouse;
	t_id = setInterval(animate,20);
	
	newHTML = '<div class="border_preview"><div id="loader_container"><img src="images/ajax-loader.gif" width="32" height="32" border="0" alt=""></div>';

	if (showthumb > 0){
    newHTML = newHTML + '<div align="center" style="padding: 10px;"><img onload="javascript:remove_loading();" src="' + imagename + '" width="430" height="380" border="0"></div>';

	newHTML = newHTML + '</div>';
	framewidth = currentimagewidth+20;
	frameheight = currentimageheight+20;
	if ((navigator.userAgent.indexOf("Firefox")==-1) && (navigator.userAgent.indexOf("Opera")==-1) ) {	newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+framewidth+'" height="'+currentimageheight+'"></iframe>';}

	var obj_id = gettrailobjnostyle()
	obj_id.innerHTML = newHTML;

	gettrailobj().display="block";

}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]
	var XShift= -240
	var YShift= 0
	var XMargin=0
	var YMargin=0

	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(truebody().clientWidth>955){
        XMargin=(truebody().clientWidth-955)/2
    }
	if (typeof e != "undefined"){
		if (docwidth - e.pageX < currentimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - currentimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < currentimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX - truebody().scrollLeft < (currentimagewidth + 2*offsetfrommouse[0]+7)){
			xcoord = -2*offsetfrommouse[0] + XShift - XMargin + truebody().scrollLeft + event.clientX - currentimagewidth; // Move to the left side of the cursor
		} else {
			xcoord = offsetfrommouse[0] + XShift - XMargin + truebody().scrollLeft + event.clientX
			//xcoord += truebody().scrollLeft-(truebody().clientWidth-955)/2+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 2*offsetfrommouse[1]+23)){
		    // Move to the top side of the cursor
			//ycoord = offsetfrommouse[1] + event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + currentimageheight + event.clientY - docheight));
			ycoord = -20-2*offsetfrommouse[1] + YShift - YMargin + truebody().scrollTop + event.clientY - currentimageheight//Math.max(0,(2*offsetfrommouse[1] + currentimageheight + event.clientY - docheight))
			//ycoord =0
		} else {
			//ycoord = offsetfrommouse[1] + YShift - YMargin + truebody().scrollTop + event.clientY;
			ycoord = offsetfrommouse[1] + YShift - YMargin + truebody().scrollTop + event.clientY
		}
	}
	//xcoord = offsetfrommouse[0] + XShift - XMargin + truebody().scrollLeft + event.clientX
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
	//gettrailobj().left = window.event.clientX+"px";
	//gettrailobj().top = window.event.clientY+truebody().scrollTop+"px";
}
}

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);
}