jQuery(document).ready(function(){ 
								
    jQuery.tablesorter.addParser({ 
        // set a unique id 
        id: 'groesse', 
        is: function(s) { 
            // return false so this parser is not auto detected 
            return false; 
        }, 
        format: function(s) { 
            // format your data for normalization 
            return s.toLowerCase(); 
        }, 
        // set type, either numeric or text 
        type: 'numeric' 
    }); 								
								
								
    jQuery("table.objListing").tablesorter({
        headers: { 
            0: { 
                sorter:'numeric' 
            },  
            4: { 
                sorter: false // disable img-column
            }
        } 										   
										   
	}); 
});