function extrem(url,name){
   ScreenWidth = screen.width;
   ScreenHeight = screen.height;
   var fenster = window.open(url,name,"fullscreen=1,toolbars=0,status=0,location=0,menubar=0,left=0");
   fenster.focus();
}
function openWindow(xsize,ysize,url){
   ScreenWidth = screen.width;
   ScreenHeight = screen.height;
   xpos = (ScreenWidth/2)-(xsize/2);
   ypos = (ScreenHeight/2)-(ysize/2);
   var fenster = window.open(url,"Fenster1",'width='+xsize+',height='+ysize+',toolbar=0,status=0,scrollbars=0,resizable=0,location=0,menubar=0,left='+xpos+',top=80');
   fenster.focus();
}
function openWindow2(xsize,ysize,Fragetext,url){
   var number=null;
   ScreenWidth = screen.width;
   ScreenHeight = screen.height;
   xpos = (ScreenWidth/2)-(xsize/2);
   ypos = (ScreenHeight/2)-(ysize/2);
   number=prompt(Fragetext+" ?", "");
   newurl=url+number;
   if(number!=null && number!=""){
      var fenster = window.open(newurl,"Fenster2",'width='+xsize+',height='+ysize+',toolbar=0,status=0,scrollbars=0,resizable=0,location=0,menubar=0,left='+xpos+',top=80');
       fenster.focus();
   }
}
function openWindow3(xsize,ysize,url){
   ScreenWidth = screen.width;
   ScreenHeight = screen.height;
   xpos = (ScreenWidth/2)-(xsize/2);
   ypos = (ScreenHeight/2)-(ysize/2);
   var fenster = window.open(url,"Fenster3",'width='+xsize+',height='+ysize+',toolbar=0,status=0,scrollbars=1,resizable=0,location=0,menubar=0,left='+xpos+',top=30');
   fenster.focus();
}
function openURL(xsize,ysize,url,name){
   ScreenWidth = screen.width;
   ScreenHeight = screen.height;
   xpos = (ScreenWidth/2)-(xsize/2);
   ypos = (ScreenHeight/2)-(ysize/2);
   var windowName = name;
	windowName = window.open(url,name,'width='+xsize+',height='+ysize+',toolbar=0,status=0,scrollbars=1,resizable=0,location=0,menubar=0,left='+xpos+',top=30');
   windowName.focus();
}
function openFrame(frameNr,url){
   top.frames[frameNr].location.href = url;
}
function openFrame2(frameNr,url){
   opener.parent.frames[frameNr].location.href = url;
}

/*** Mouseover ***/
function handOver(id,farbe){
        document.getElementById(id).style.backgroundColor=farbe;
        document.getElementById(id).style.cursor='pointer';
}
function handOut(id,farbe){
        document.getElementById(id).style.backgroundColor=farbe;
        document.getElementById(id).style.cursor='auto';
}
function linkOver(id,farbe){
        document.getElementById(id).style.color=farbe;
        document.getElementById(id).style.cursor='pointer';
}
function linkOut(id,farbe){
        document.getElementById(id).style.color=farbe;
        document.getElementById(id).style.cursor='auto';
}