function makeVisible(id){
    var f = document.mainForm;

    if(f.diplomarbeit == "undefined")
        return false;

    if(f.diplomarbeit.checked==true){
        for(var i=0; i < id.length; i++){
            if(document.getElementById(id[i])){
                document.getElementById(id[i]).style.display="";
            }
        }

    }else{
        for(var i=0; i < id.length; i++){
            if(document.getElementById(id[i])){
                document.getElementById(id[i]).style.display="none";
            }
        }
    }
}

function setCheckboxes(the_form, do_check){
     var elts      = (typeof(document.forms[the_form].elements['email[]']) != 'undefined')
                   ? document.forms[the_form].elements['email[]']
                   : null;
     var elts_cnt  = (typeof(elts.length) != 'undefined')
                   ? elts.length
                   : 0;

     if (elts_cnt) {
         for (var i = 0; i < elts_cnt; i++) {
             elts[i].checked = do_check;
         }
     } else {
         elts.checked        = do_check;
     }
 }

 function activate(id){
    document.postform.action = 'suche.php?activate='+id+"&value=1&post=1";
    document.postform.submit();
 }

 function deactivate(id){
    document.postform.action = 'suche.php?deactivate='+id+"&value=1&post=1";
    document.postform.submit();
 }

 function del(text,id){
    if(!confirm(text))
        return;
    document.postform.action = 'suche.php?delete='+id+"&value=1&post=1";
    document.postform.submit();
 }