讓文本框在ie中敲回車起作用、火狐中敲回車無作用的代碼

<script type="text/javascript">    function ButtonNo()
    {
        if(document.all)
        {
            event.returnValue=false;
        }
        else
        {
            event.preventDefault();
        }
     }
</script>

<asp:TextBox ID="Texx_Name"  runat="server"  οnkeypress="if(event.keyCode==13){ButtonNo();return false;}"></asp:TextBox>

重點：οnkeypress="if(event.keyCode==13){ButtonNo();return false;}"