function log( logUrl, url ) {
    new Ajax.Request( logUrl, 
                      { method: 'get', 
                        onComplete : function(transport) {
                                         window.location = url; 
                                     } 
                      } 
    );
}
function logcl( logUrl ) {
    new Ajax.Request( logUrl, 
                      { method: 'get',
                        asynchronous: true, 
                        onComplete : function(transport) {
                                         return true; 
                                     } 
                      } 
    );
}