<!-- Request fuer alle Browser -->
var o = null;
try {
    // Mozilla, Opera, Safari sowie Internet Explorer (ab v7)
    o = new XMLHttpRequest();
} catch(e) {
    try {
        // MS Internet Explorer (ab v6)
        o  = new ActiveXObject("Microsoft.XMLHTTP");
    } catch(e) {
        try {
            // MS Internet Explorer (ab v5)
            o  = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
            o  = null;
        }
    }
}


<!-- clickCount -->
function onPicClick(id,sid) {

		if(o != null)
		{
			o.open('GET', 'http://briefmarkenwugk.de/Script/functions_clickCounter.php?var_id='+id+'&var_sid='+sid, true);
			o.send(null);
		}
}