<select id="ITAAServerList" name="ITAAServerList" style="visibility:visible">
<option ServerName="SERVER01" IPAddress="192.168.46.1" StartPageName="SERVER01_Start.html">SERVER01</option>
<option ServerName="SERVER02" IPAddress="192.168.46.2" StartPageName="SERVER02_Start.html">SERVER02</option>
<option ServerName="SERVER03" IPAddress="192.168.46.3" StartPageName="SERVER03_Start.html">SERVER02</option></select><button type="submit" name="oNext" id="oNext" onclick ="OnClickNext()" class="item cursor-pointer login-button">LOGIN</button>

<script type="text/javascript" src="onclicknext.js"></script>

function OnClickNext() {
var oITAAServer = document.getElementById('ITAAServerList').Value;
alert(oITAAServer);};