PostPic routine from KWhinnery's SnapPost Sample

//Make XHR request to post picture
	function postPic(pic) {
	  if (Titanium.Network.NETWORK_NONE) {
	    var a = Titanium.UI.createAlertDialog({
 	      title:'We\'re Sorry...',
 	      message:'Snapost cannot detect a network connection.  Are you connected to the internet?'
 	    });
	  }
	  else {
	    var query = 'https://twitpic.com/api/uploadAndPost';
      var xhr = Titanium.Network.createHTTPClient();
  		xhr.onreadystatechange = function() {
        if (this.readyState == 4) {
          //Check the response to see if we're okay
          //TwitPic API reference: http://twitpic.com/api.do
          var parser = new DOMParser();
          var doc = parser.parseFromString(this.responseText, "text/xml");
          $(doc).find("rsp").each(function() {
            var stat = $(this).attr('stat'); //We only get this on an error
            if (stat == null || stat !== 'fail') {
              reset(function() {
                $("#posting").fadeOut(function() {
                  $("#success").fadeIn();
                });
                setTimeout(function() {
                  $("#success").fadeOut(function() {
                    $("#post-button").fadeIn();
                  });
                },4000);
              });
            }
            else {
              reset(function() {
                $(doc).find("err").each(function() {
                  $("#error-message").html($(this).attr('msg'));
                  $("#posting").fadeOut(function() {
                    $("#error").fadeIn();
                  });
                  setTimeout(function() {
                    $("#error").fadeOut(function() {
                      $("#post-button").fadeIn();
                    });
                  },8000);
                });
              });
            }
          });
        }
  		};
  		xhr.open('POST',query);
  		xhr.send({
  			media:pic,
  			username: Titanium.App.Properties.getString('username'),
  			password: Titanium.App.Properties.getString('password'),
  			message: message.value
  		});
	  }
	}