Could you be a little more specific? Are you trying to pass args and vars?
Or are you trying to load HTML using AJAX and sending it to a target DIV? If
you are using web2py's ajax function, you may be limited to what you can do.
Worst case, you can always try calling jQuery's load() method:
var url = {{=URL('ajax_view.load', args={'arg1': 'my', 'arg2', 'value'})}};
jQuery('#target').load(url);
Or like this:
var url = {{=URL('ajax_view.load')}};
jQuery('#target').load(url, {arg1: 'my', arg2, 'value'});
Does this help?