/*http://www.javascriptkit.com*/

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 defaultimageheight = 400;	// maximum image size.
var defaultimagewidth = 600;	// 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=""
	document.onscroll=null
	//gettrailobj().left="-500px"
	clearTimeout(timer);
}

function showtrail(lang,width,height)
{
	l = lang
	w = width
	h = height
	timer = setTimeout("show(l,w,h);", 0);
}
function show(lang,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) : '';
	

	( width == 0 ) ? width = defaultimagewidth: '';
	( height == 0 ) ? height = defaultimageheight: '';
		
	defaultimageheight = height
	defaultimagewidth = width
	_onscroll();
	window.onscroll = _onscroll;
	
	newHTML = '<iframe src="products.php?lang=' + lang + '" scrolling="auto" marginheight="0" marginwidth="0" frameborder="0" width="' + width + '" height="' + height + '"></iframe>';
	
	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;
		} 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;
		} 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"
}
function _onscroll()
{
	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)
	
	_top = truebody().scrollTop + Math.ceil((docheight - defaultimageheight) / 2);
	_left = truebody().scrollLeft + Math.ceil((docwidth - defaultimagewidth) / 2);
	gettrailobj().top = _top + "px"
	gettrailobj().left = _left + "px"
}