function winopen(seite, breit, hoch) 
{ 
window.open(seite,"testwin",'width=' + breit + ', height=' + hoch +' ,toolbar=no, scrollbars=auto, resizable=no'); 
}


function winOpen (url) {
  
    var breite = screen.width;
    var hoehe = screen.height;
    var links = (breite-970)/2;
    var oben = (hoehe-576)/2;

  myPop = window.open(url, "microsite", "width=970,height=576,left='+ links +',top='+ oben +',toolbar=no,scrollbars=no,resizeable=no");
  myPop.focus();
}