function loading(element_id) {
	this.element_id = element_id;
	$(this.element_id).innerHTML = "<div>&nbsp;&nbsp;<strong>Loading...</strong></div><img src=\"/ext/images/roller.gif\" />";			
	this.hide = hideLoading;
	this.show = showLoading;
}

function showLoading(){
	$(this.element_id).style.display='block';			
}

function hideLoading(){
	$(this.element_id).style.display='none';			
}