关于jquery回车键问题

描述如下
textbox1是第一个输入框，textbox2是第二个输入框，我现在想输入第一个输入框并按回车键，自动跳到第二个输入框，并触发一个向下的键盘事件，希望高手解决
代码如下：
   $('#textbox1).bind('keyup',function(event)
                                                           {if(event.keyCode==13){
                                                                                                              $('#textbox2).focus(
                                                                                                                                                   function(){
                                                                                                                                                                               //问题，怎么触发一个向下的键盘事件
                                                                                                                                                                    });
                                                                                                     }
                                                           });  
                 })

怎么没人回复？？

帮人顶一下！！！

传统js对象里有.focus()方法，jQuery对象不知道支不支持这个方法，LZ可以试一试