?????????????????????????????????????license key????????????????????????????????????????????????????
????Insus.NET????asp.net??????????????

????????????????????????????????????????????????????????????????????????????????дJ(rèn)avascript???????ɡ?
<script type="text/javascript">
function JumpToNextTextBox(currentTxtBox?? nextTextBoxID) {
if (currentTxtBox.value.length >= 5) {
document.getElementById(nextTextBoxID).focus();
}
}
</script>
????Html code:
License Key:
<asp:TextBox ID="Number1" runat="server" onkeyup="JumpToNextTextBox(this?? 'Number2')" Width="65"></asp:TextBox>
-
<asp:TextBox ID="Number2" runat="server" onkeyup="JumpToNextTextBox(this?? 'Number3')" Width="65"></asp:TextBox>
-
<asp:TextBox ID="Number3" runat="server" onkeyup="JumpToNextTextBox(this?? 'Number4')" Width="65"></asp:TextBox>
-
<asp:TextBox ID="Number4" runat="server" onkeyup="JumpToNextTextBox(this?? 'Number5')" Width="65"></asp:TextBox>
-
<asp:TextBox ID="Number5" runat="server" MaxLength ="5" Width="65"></asp:TextBox>