var offsetfrommouse=[2,2];
var defaultimageheight = 40;
var defaultimagewidth = 40;
var fenster_grenzeX = 200;
var fenster_grenzeY = 200;
var timer;
function popupWindow(url) { window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=100,height=100,screenX=150,screenY=150,top=150,left=150')
}  
function gettrailobj(){
if (document.getElementById)
return document.getElementById("bild_dummy").style
}
function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("bild_dummy")
}
function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}
function versteckeBild(){
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}
function showLayertrail(imagename,type,width,height){
	i = imagename
	t = type
	w = width
	h = height
	timer = setTimeout("showLayer('"+i+"','"+t+"',w,h);", 1);
}
function zeigeBild(imagename,type,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>fenster_grenzeX && docheight>fenster_grenzeY)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';

		defaultimageheight = height;
		defaultimagewidth = width;
    
		document.onmousemove=followmouse;

		newHTML = '';
		var what = '';
		t = type;
		if(t=='img'){ what = '<img alt="' + imagename + '" src="' + imagename + '" border="0">';
		}else{
	what = '<div style=" width: 500px; padding: 5px; ">'+document.getElementById(imagename).innerHTML+'</div>';
		}
    	newHTML = newHTML + '<div class="preview_temp_load">' + what + '</div>';
		newHTML = newHTML + '';

		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'';
		}
		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)
	var fenster_breite = docwidth;
	var fenster_hoehe = docheight;
  var bild_breite = defaultimagewidth;
  var bild_hoehe = defaultimageheight;
  
  if (typeof e != "undefined"){
		if (docwidth - e.pageX < 0 + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - 0; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < 0 + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + 0 + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}
	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 0 + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 0; // 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] + 0 + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

  var tempX = xcoord;
  var tempY = ycoord;
  
  // wo soll Bild starten
  if((tempX + bild_breite) < fenster_breite ){ x = tempX; }else{ x = (tempX - bild_breite); }
  if(x < 0){ x = 0; }
  
  if((tempY + bild_hoehe) < fenster_hoehe){ y = tempY; }else{ y = (tempY - bild_hoehe + 35); }
  if(y < 0){ y = 0; }
  
	gettrailobj().left=x + "px";
	gettrailobj().top=y + "px";
}