var win=null;
function NewWindow(mypage,myname,w,h,pos,infocus){
if(pos=="random"){ myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){myleft=(screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;}
else if((pos!='center' && pos!="random") || pos==null){myleft=0;mytop=20}
settings="width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=yes,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no";win=window.open(mypage,myname,settings);
win.focus();
}

function pictureview(bildname) {
 NewWindow(bildname,'windwo','500','400','center','front');
}

function newpopup(filename,width,height) {
 NewWindow(filename,'windwo',width,height,'center','front');
}

function frage(frage,link) {
  var antwort = confirm(frage);
  if(antwort==true) { location.href=link; }
}