this is banner.jsp :

 <select id = "selectValue" onchange="loadInternationalDoc()">
  <option value="domestic">Domestic (India)</option>
  <option value = "international">International</option>
 </select>

<script>
function loadInternationalDoc() {
var xmlhttp;
var selectionValue = document.getElementById('selectValue').value;
var url;
if(selectionValue == 'international') {
url="internationalDefault.jsp";
}
else {
var url = "default.jsp";
}

if (window.XMLHttpRequest)
{
    xmlhttp=new XMLHttpRequest();
}
else
{
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
    document.getElementById("fullwrapper").innerHTML=xmlhttp.responseText;
}
xmlhttp.open("GET", url, true);
xmlhttp.send();