var a = document.getElementsByTagName("a");

for(i = 0; i< a.length; i++) {
var IDMuster = a[i].id;
var Erg = IDMuster.search(/^partnerlinks_/)
if(Erg != -1) {
a[i].onclick = count_link;
}
}

function count_link() {
var linkkid = this.id;
var nochar = linkkid.replace(/[^0-9]/g, '');
i = new Image();
i.src= "http://www.juergens-workshops.de/cgi-bin/site/partnerclicks.cgi?"+nochar+"";return true;
}