Appending form data on submit.

[devnull]

Hi;

During the form submit process, I want to append data to the form being submitted but can't seem to figure it out:

Code:

function xxx(userid){
	$('#'+fid).form('submit',{  
		url:url,
		onSubmit: function(data){
			data += "userid="+userid;	
		},
		success:function(data){  
		}  
	});
}

so as well as the <INPUT> element values contained in the form, I want to append one or more additional data items.

Thanks

PeterC