// JavaScript Document
function openPopup(url, width, height, winname) {

        var old = self;

        var trails="width=" + width + ",height=" + height + ",toolbar=no,directories=no,status=no,scrollbars=yes,resize=no,menubar=no";

        newWindow=window.open(url,winname,trails);

        }
		
function change()
{
	var welcherLink = document.frmsearch.kurs_id.selectedIndex;
    document.frmsearch.kurs_id.selectedIndex = "0";
	destination = 'index.php?filter='
    if(welcherLink > "0"){
       top.location.href = destination+document.frmsearch.kurs_id.options[welcherLink].value;
    }
}

<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
//-->