function open_Window(URL,name,features) { 
	window.open(URL,name,features);
}

function preload() { //preloading all images
  	var d=document; 
  	if(d.images){ 
  		if(!d.image_array) d.image_array = new Array();
    	var i, j=d.image_array.length, a=preload.arguments; 
		for(i=0; i<a.length; i++)
    	if (a[i].indexOf("#")!=0){ 
			d.image_array[j]=new Image; 
			d.image_array[j++].src=a[i];
		}
	}
}

function imageOn() { //images on
  	var i, j=0, x, a=imageOn.arguments; 
	document.sr=new Array; 
	for(i=0;i<(a.length-2);i+=3)
   	if ((x=findObject(a[i]))!=null){
		document.sr[j++]=x; 
		if(!x.oSrc) x.oSrc=x.src; 
		x.src=a[i+2];
	}
}

function imageOff() { //images off
  	var i, x, a=document.sr; 
  	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) 
	x.src=x.oSrc;
}

function findObject(n, d) { 
  	var p,i,x;  
	if(!d) d=document; 
	if((p=n.indexOf("?"))>0&&parent.frames.length){
    	d=parent.frames[n.substring(p+1)].document; 
		n=n.substring(0,p);
	}
  if(!(x=d[n])&&d.all) x=d.all[n]; 
  for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObject(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); 
  return x;
}

function checkFrameset() {
  if(!parent.main)
   parent.location.href="http://www.ggsc.de/index.html";
}