$(document).ready(function(){
	$('.index_list img').animate({opacity:'0.3'});
	$('.index_list').hover(
	function(){
		$(this).find("img").animate({opacity:1},{ queue:false, duration:200 });
	},
	function(){
		$(this).find("img").animate({opacity:0.3},{ queue:false, duration:200 });
	})
})