uploading a picture

var win = Titanium.UI.currentWindow;
var xhr;

Ti.App.globalImage = null;

function alert(title,message){
  var alertDialog = Titanium.UI.createAlertDialog({ 
    title: title,
    message: message, 
    buttonNames: ['OK'] 
  });
  alertDialog.show();
}

//Check If The Form Is Empty
function validate(){

  if (whatText.value != '' && whereText.value != ''){
     return true;
  } else {
      alert('Hold On','Something is Missing');
      return false;
  }
}

// Helper for updating the interface
function networkUpdateSuccess() {
    alert('Success Uploaded',Ti.App.globalImage);
    win.rightNavButton = null;
    Ti.App.globalImage = null;
    whatText.value = '';
    whereText.value = '';
    actInd.hide();
    upload.hide();
    previewImage.image = '../images/upload_image.png';
}


function initXHR() {
  // Create the xhr object
  xhr = Titanium.Network.createHTTPClient();

  // Set the static properties on the xhr object
  xhr.setTimeout(20000);

  // First setup the event handlers
  xhr.onerror = function(e) {
    Ti.UI.createAlertDialog({title:'Error', message:e.error}).show();
  };

  xhr.onload = function(e) {
    // Sucessful operation from the send
    if (xhr.readyState == 4) {
     networkUpdateSuccess();
    } else {
     // Houston - there was a problem
     // Although the onerror is probably going to be called
    }
    Ti.API.info('IN ONLOAD ' + this.status + ' readyState ' + this.readyState);
  };

  xhr.onsendstream = function(e) {
    Ti.API.info('ONSENDSTREAM - PROGRESS: ' + e.progress);
  };

}

function postPic(whatText, whereText) {
  // Ok - now let's get down to business
  // You may have these already elsewhere

  initXHR();

  actInd.show();

  // open the client - it's probably best to do this fresh with each upload
  // it'll ensure that the readystate is set accordingly - not sure if it's reset
  // with the open or the send
  xhr.open('POST','https://twitpic.com/api/uploadAndPost');

  // send the data
  xhr.send({media:Ti.App.globalImage, message:whatText.value+' @ '+whereText.value});
}

//Listener to Upload
uploadSmall.addEventListener('click',function(e){

	  if(validate() != false){
		postPic(whatText.value,whereText.value);
	  }
});

//Listener to Upload Large Button
upload.addEventListener('click',function(e){
      if(validate() != false){
		postPic(whatText.value,whereText.value);
	  }
});


//Listener to Option Group
Ti.App.optionGroup.addEventListener('click',function(e){

   if(e.index == 0) {
               //Opens Photo Gallery
Titanium.Media.openPhotoGallery({

                success:function(event)
                {
                      var image = event.media;


                      Ti.App.globalImage = image;
                      previewImage.image =Ti.App.globalImage;
                      win.rightNavButton = uploadSmall;
                      upload.show();



                },
                cancel:function()
                {

                },
                error:function(error)
                {

                },
                allowImageEditing:true

            });


     }

if (e.index == 1) {

//Open Camera
Titanium.Media.showCamera({


      success:function(event)
                {
                      var image = event.media;

                      Ti.App.globalImage = image;
                      previewImage.image = Ti.App.globalImage;
                      win.rightNavButton = uploadSmall;
                      upload.show();



                },
            cancel:function()
            {

            },
            error:function(error)
            {
                // create alert
                var a = Titanium.UI.createAlertDialog({title:'Camera'});

                // set message
                if (error.code == Titanium.Media.NO_CAMERA)
                {
                    a.setMessage('Device does not have video recording capabilities');
                }
                else
                {
                    a.setMessage('Unexpected error: ' + error.code);
                }

                // show alert
                a.show();
            },
            saveToPhotoGallery:true,
            allowImageEditing:true
});
    }

});

previewImage.addEventListener('click',function(e){

  Ti.App.optionGroup.show();


});



//Create Stack
formView.add(whatText);
formView.add(whereText);
formView.add(atLabel);
formView.add(previewImage);
formView.add(actInd);
formView.add(upload);
win.add(formView);