JavaScript Code:

function getDescription(channelId,itemId) {

var url = 'http://localhost:8080/getDescription.jsp?channelId=' + channelId + '&itemId=' + itemId;

if (window.XMLHttpRequest) {

req = new XMLHttpRequest();

} else if (window.ActiveXObject) {

req = new ActiveXObject("Microsoft.XMLHTTP");

}

req.onreadystatechange = processRequest;

req.open("GET", url, true);

req.send(null);

}

function processRequest() {

if (req.readyState == 4) {

if (req.status == 200) {

parseMessages();

} else {

alert ( "Not able to retrieve description" );

}

}

}

function parseMessages() {

response = req.responseXML.documentElement;

itemDescription = response.getElementsByTagName('description')[0].firstChild.data;

alert ( itemDescription );

}