var offsetfrommouse=[15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=100; //duration in seconds image should remain visible. 0 for always.
var currentimageheight = 100;	// maximum image size.369
var t_id = 0;
var currentimagewidth = 130;	// maximum image size.429
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="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,showthumb){
	i = imagename
	t = title
	s = showthumb
	timer = setTimeout("show('"+i+"',t,s);",30); //200
}
function show(imagename,title,showthumb){
bild = new Image(); bild.src = imagename;	
 bildX = bild.width;
 bildY = bild.height;
	
	document.onmousemove=followmouse;
	t_id = setInterval(animate,20);
	
	newHTML = '<div class="border_preview"><div id="loader_container"><div id="loader" style="position:relative;"><div align="center">Lade Vorschau...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
if (showthumb > 0){	newHTML = newHTML + '<h2 class="Heading2" align="center">' + title + '</h2>'}
	
    newHTML = newHTML + '<div align="center"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"></div>';
//newHTML = newHTML + '<h2 class="Heading2" align="center"><br>' + getScrollXY()[1] + '</h2>'; //koordinaten
newHTML = newHTML + '</div>';


	framewidth = currentimagewidth+33;
	//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 windowWidth = getSize()[0];
	var windowHeight = getSize()[1];
	var browserSpecOffset = 0;

var bildX = bild.width;
var bildY = bild.height;
//alert (bildX);
		
	if ((typeof window.event != "undefined") && (navigator.userAgent.indexOf("Opera")==-1)){ xcoord += event.clientX; browserSpecOffset = 30; }
	
	if (navigator.userAgent.indexOf("Opera")!=-1) {	xcoord += window.event.clientX; browserSpecOffset = 50;}
	
	if (xcoord+bildX+browserSpecOffset>windowWidth) { xcoord -= bildX + browserSpecOffset+offsetfrommouse[0]; }
//	if (xcoord+currentimagewidth+browserSpecOffset>windowWidth) { xcoord += currentimagewidth-windowWidth; }
//	if (xcoord<0) {	xcoord += browserSpecOffset+offsetfrommouse[0];	}
	if (xcoord<getScrollXY()[0]) {	xcoord += getScrollXY()[0]+browserSpecOffset+offsetfrommouse[0];	}

// für Ycoordinaten
	if ((typeof window.event != "undefined") && (navigator.userAgent.indexOf("Opera")==-1)){ ycoord += event.clientY; browserSpecOffset = 30;}
	
	if (navigator.userAgent.indexOf("Opera")!=-1) {	ycoord += window.event.clienty; browserSpecOffset = 50;	}
	
	if (ycoord+bildY+browserSpecOffset>windowHeight) { ycoord -= bildY + browserSpecOffset+offsetfrommouse[1]; }
//	if (ycoord+currentimageheight+browserSpecOffset>windowHeight) { ycoord += currentimageheight-windowHeight; }
//	if (ycoord+currentimageheight+browserSpecOffset>windowHeight) { ycoord = windowHeight-currentimageheight-browserSpecOffset; }

//	if (ycoord<0) {	ycoord += browserSpecOffset+offsetfrommouse[0];	}
	if (ycoord<getScrollXY()[1]) {	ycoord = getScrollXY()[1]+browserSpecOffset+offsetfrommouse[0];	}
// ende

	gettrailobj().left = xcoord+"px";
	gettrailobj().top = ycoord+"px";
//	gettrailobj().left = xcoord+getScrollXY()[0]+"px";
//	gettrailobj().top = ycoord+getScrollXY()[1]+"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);
}