I am new at Mojo framework and Palm webOS. I want to just retrieve data from XML files using xmlhttprequest (Ajax). I am trying to get data from following script.

this.items = [];
var that = this;
var request = new Ajax.Request("first/movies.xml", {
            method: 'get',
            evalJSON: 'false',
            onSuccess:function(transport){
              var movieTags = transport.responseXML.getElementsByTagName('movie');
              for( var i = 0; i < movieTags.length; i++ ){
                 var title = movieTags[i].getAttribute('title');
                 that.items.push({text: title});
              }
            },
            onFailure: function(){ alert('Something went wrong...') }
        });  

My XML files are in the first/movies.xml folder. From that I am trying to access and retrieve data. but not display anything in the screen of Palm Pre emulator.

So can anyone is having idea about this issue? Please give a link where can I find the source code for getting data from XML files in webOS.