$j(document).ready(function(){
    lastBlock = $j("#a1");
    maxWidth = 280;
    minWidth = 85;	

    $j("#horizandal ul li a").mouseover(
      function(){
        $j(lastBlock).animate({width: minWidth+"px"}, { queue:false, duration:400 });
	$j(this).animate({width: maxWidth+"px"}, { queue:false, duration:400});
	lastBlock = this;
      }
    );
});