$(document).ready(function(){
	$('div.yellow-container').append('<div class="yellow-tl"></div><div class="yellow-bl"></div><div class="yellow-tr"></div><div class="yellow-br"></div>')
	$('div.white-container').append('<div class="white-tl"></div><div class="white-bl"></div><div class="white-tr"></div><div class="white-br"></div>')
	$('div.grey-container').append('<div class="grey-tl"></div><div class="grey-bl"></div><div class="grey-tr"></div><div class="grey-br"></div>')
});