function switchMenuButtonsOver(obj, image) {
    obj.src = 'images/button_' + image + '_rot.jpg';
}
function switchMenuButtonsOut(obj, image) {
    obj.src = 'images/button_' + image + '_grau.jpg';
}

function sortlist(obj)
{
$(function(){
var mylist = $(obj);
var listitems = mylist.children('div.result').get();

listitems.sort(function(a, b) {
var compA = $(a).find('span.plz').text().toUpperCase();
var compB = $(b).find('span.plz').text().toUpperCase();

   return (compA < compB) ? -1 : (compA > compB) ? 1 : 0;
})
$.each(listitems, function(idx, itm) { mylist.append(itm); });

});

}