function onUploading(_type){
	switch(_type){
		case "start":
			document.getElementById("uploadingmsg").style.display = 'block';
			document.getElementById("foto").disabled = true;
			document.getElementById("upload").disabled = true;
			break;
		case "end":
			document.getElementById("uploadingmsg").style.display = 'none';
			document.getElementById("foto").disabled = false;
			document.getElementById("upload").disabled = false;
			document.getElementById("foto").value = "";
			break;
	}
}

function refreshPictures(_DIV_, _URL_, _PARAM_){
	
	try{
		_obj = AJAXobj();
	}catch(err){
	}
	_obj.open("POST", _URL_, true);
	onUploading("start");
	_obj.onreadystatechange = function(){
		if(_obj.readyState == 4){
			if(_obj.status == 200){
				document.getElementById(_DIV_).innerHTML = _obj.responseText;
				onUploading("end");
			}else{
				onUploading("end");
				alert("ERROR_"+_obj.status+"\nError al subir la foto.\nIntentalo nuevamente mas tarde.");
			}
		}
	}
	_obj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	_obj.send(_PARAM_);
}