页面回车键响应,onkeydown事件

页面中响应回车键代码:
JS:

 1function enterSubmit(src,e)
 2     {
 3        if(window.event)
 4            keyPressed = window.event.keyCode; // IE
 5        else
 6            keyPressed = e.which; // Firefox
 7        if(keyPressed==13)
 8        { 
 9            submitForm();            
10           return false;
11        }
12    }
13    function submitForm()
14    {
15        var obj = document.getElementById('MyMaster_DemoPageInput_goButton');                      
16        obj.click();                 
17    }

HTML:

<asp:TextBox ID="keyinput"onkeydown="return enterSubmit(this,event);" runat="server"></asp:TextBox>