override ajaxForm option
===

I use ajaxform to submit forms. I do something like that 

    $('#form').ajaxForm(options);

Now I need override url option but following code not works

	$('.paginate a').live('click', function(e){
		e.preventDefault();
		var options = {
			url:       $(this).attr('href')        // override for form's 'action' attribute
		};

		$('#form').ajaxForm(options);
		$('#form').submit();

	});

So Can I update option setting?