function forum()
{
 var breite=995; var hoehe=700; var positionX=((screen.availWidth / 2) - breite / 2); var positionY=((screen.availHeight / 2) - hoehe / 2);
 var url='forum.html',
 pop=window.open('','','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,fullscreen=0,width='+breite+',height='+hoehe+',top=10000,left=10000'); pop.resizeTo(breite,hoehe); pop.moveTo(positionX,positionY); pop.location=url;
}