$(document).ready(function(){
	//To switch directions up/down and left/right just place a "-" in front of the top/left attribute
	$('.box_node').hover(function(){
		$(".cover", this).stop().animate({left:'-240px'},{queue:false,duration:300});
	}, function() {
		$(".cover", this).stop().animate({left:'0px'},{queue:false,duration:300});
	});
});