$(document).ready(
	function(){
		lastBlock = $("#initial");
		maxWidth = 540;
		minWidth = 80;
		$(".slider").hover(
			function(){
				$(lastBlock).animate({width: minWidth+"px"}, { queue:false, duration:50 });
				$(this).animate({width: maxWidth+"px"}, { queue:false, duration:50});
				lastBlock = this;
			}
		);
	}
);