function merk_req(fid) {

	 //erstellen des requests
	 var req = null;

	try{
		req = new XMLHttpRequest();
	}
	catch (ms){
		try{
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (nonms){
			try{
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (failed){
				req = null;
			}
		}  
	}
	var add = document.getElementById('merk_' + fid).checked;	
	
	
	//document.getElementById('ULTRADEBUG0R').innerHTML = '<strong>'+fid+'</strong> '+add;
	
	
	req.open("GET", './scripte/ajax-merken/merken.php?id='+fid+'&add='+add, true);
	req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	req.send(null);	
};