$(function(){
			
			var $month = $("#mce-MMERGE5");
			var $day = $("#mce-MMERGE4");
			$month.change(function(){
				if($("option:selected",this).val() === "No Thanks"){
					$day.attr("disabled","true").find("option:first").attr("selected","selected");
				}else{
					$day.removeAttr("disabled");
				}					
			});
});