function openWindow(URL,winName,features){
W=520
H=458
var X=Math.ceil((window.screen.width-W)/2)
var Y=Math.ceil((window.screen.height-H)/2)
features=features+',left='+X+',top='+Y
popup=window.open(URL,winName,features)}
function weiter(){
openWindow('Rattan_Service/pics_reparaturen.php','popup','width=520,height=458,menubar=no,scrollbars=no,resizable=no,locationbar=no,status=no')
popup.focus()}