function ajax_validate_form(f, url) {
	HideBaloon();
	pars = 'ajax=true&';
	pars += Form.serialize(f);
	new Ajax.Request(url, {method: 'post', parameters: pars,
		onSuccess: function(transport) {
//			document.body.style.cursor = '';
			eval(transport.responseText);
		},
		onLoading: function() {
//			document.body.style.cursor = 'wait';
		},
		onFailure: function(req) {
//			document.body.style.cursor = '';
			alert("Data transmit error:\n" + req.statusText);
		}
	});

	return false;
}