SAXParser not working

I created a XS Project

with the following code :

>>> Test.xsjs

try {

var parser =new $.util.SAXParser();

//No other lines of code

} catch(e) {

$.response.contentType ="text/plain";

$.response.setBody(e.message);

}

.xsapp

{

"auth_required" : true

}

.xsaccess

{

"exposed" : true

}

And when I try to execute the xsjs file from Browser I am getting this error :

reference to undefined property $.util.SAXParser

Please help.

Thanks,

Vijay