function newsletter() 
{ 
 var breite=450; 
 var hoehe=420; 
 var positionX=((screen.availWidth / 2) - breite / 2); 
 var positionY=((screen.availHeight / 2) - hoehe / 2); 
 var url='newsletter.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; 
 }

function registrieren() 
{ 
 var breite=450; 
 var hoehe=420; 
 var positionX=((screen.availWidth / 2) - breite / 2); 
 var positionY=((screen.availHeight / 2) - hoehe / 2); 
 var url='reg.php?anmelden=yes'; 
 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; 
 }