function BildFenster(seite) 
{
 top.name = "main";

 var neuesFenster = window.open(seite,"seite","scrollbars=no,resizable=yes,menubar=no,width=50,height=50,left=10,top=10");
 if( navigator.appName.substring(0,8) == "Netscape" )
   {
   popup.location = seite;
   popup.opener = self;
   }

}