function makeOverlay(){
	hideScrollbars();
	var overlay=new Element('div', {	
		'id': 'overlay'
	});	
	
	
	overlay.injectInside(document.body);
}

function makeWindow(){
	var window=new Element('div', {	
		'id': 'window'
	});	
	window.injectInside($('overlay'));
}

function makeLoading(){
	var loading=new Element('div', {	
		'id': 'loading'
	});	
	loading.injectInside($('window'));
}
function Loading(){
	makeOverlay();
	makeWindow();
	makeLoading();
}

function destroyLoading(){
	if($('loading')) $('loading').dispose();
	if($('window')) $('window').dispose();
	if($('overlay')) $('overlay').dispose();
	if($('ov')) $('ov').dispose();
}
function hideScrollbars(){
	document.body.setStyles('overflow: hidden, overflow-x: auto, overflow-x: hidden');
}