function openradio()
{
  Radio=window.open('','Radio','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=680,height=500,left=10,top=10');
  Radio.focus();
}
function opengast()
{
  Gast=window.open('','Gast','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=730,height=500,left=20,top=20');
  Gast.focus();
}
function openmail()
{
  Mail=window.open('','Mail','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=640,height=420,left=20,top=20');
  Mail.focus();
}
function openplan()
{
  Plan=window.open('','Plan','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=580,height=450,left=20,top=20');
  Plan.focus();
}
function openbrowser()
{
  Browser=window.open('','Browser','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=300,height=300,left=300,top=100');
  Browser.focus();
}
function openwin(breite,hoehe) {
 Win=window.open('','Win','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width='+breite+',height='+hoehe+',left=130,top=8');
 Win.focus();
}