ASP.NET

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<br />
<script language="javascript" type="text/javascript"><br />
<br />
var msgInvalid = "Not validated"<br />
<br />
function val_update(valLocation, valStatus, valUser, valForm){<br />
    if (valStatus.selectedIndex == 2 && valLocation.selectedIndex == 0) {<br />
    msg = "You need to add a Location"<br />
    alert(msg);<br />
    return false; }  <br />
    if (valUser.value = "") {<br />
    msg = "You need to add a UserName"<br />
    alert(msg);<br />
    return false;<br />
    } else {<br />
    alert(msgInvalid);<br />
    return false }<br />
<br />
}<br />
<br />
</script><br />
<br />
'button here - normal button with ID, runat command, and text.<br />
<asp:Button ID="btnInsert" runat="server" Text="Insert User" /><br />
<br />