$(document).ready(function(){
		lastBlock = $("#a1");
		maxWidth = 256; //256
		minWidth = 131;
		slideThis = $(".slideItem");
		$(slideThis).hover(	
			function(){			
				$(lastBlock).animate({width: minWidth+"px"}, { queue:false, duration:400 });
				$(this).animate({width: maxWidth+"px"}, { queue:false, duration:400});
				currentBlock = this;				
				lastBlock = this;			
			}
		);
	  });