var url = 'relay.php';
		var mainsite = 'customer.php';
		var ajax = new Ajax.Request(url, {onSuccess: userLogin_handler, method: 'post', parameters: 'relay=checkLogin'});

		function userLogin(){
			var params = $H({ relay: 'userLogin', username: $('username').value, password: $('password').value });
			
			var ajax = new Ajax.Request(url,{
				onSuccess: userLogin_handler,
				method: 'post', 
				parameters: params.toQueryString()
			});
			
		}
		
		function userLogin_handler(response){      
			var json_data = response.responseText;
			eval("var jsonObject = ("+json_data+")");
			var status = jsonObject.bindings[0];
			//alert(json_data);
			//return false;
			if(status.login == 'true')
				document.location = mainsite;
			else if($('password').value != '') {
				$('warning').style.display="block";
				Effect.Shake('login');
			}
		}
		function submitenter(myfield,e) {
			var keycode;
			if (window.event) keycode = window.event.keyCode;
			else if (e) keycode = e.which;
			else return true;
			
			if (keycode == 13) {
			   userLogin();
			   return false;
			  }
			else return true;
		}
		window.onload = function() {
			Field.activate('username');
		}