$(document).ready(function() {
  $('div.accordion> div').hide();  
  $('div.accordion> h2').click(function() {
    $(this).next('div').slideToggle('fast')
    .siblings('div:visible').slideUp('fast');
  });

});

function popup (url) {
 fenster = window.open(url, "Popupfenster", "width=600,height=456,resizable=yes");
 fenster.focus();
 return false;
}
// indow.open('','jalousien','toolbar=no,width=650,height=456,directories=no,status=no,scrollbars=yes,resizable=yes,menubar=no')"><img src="img/right.PNG" alt="Haustechnik Info" width="25" height="24" border="0" /></a>