<script>
function anichange (objName) {
  if ( $(objName).css('overflow') == 'hidden' ) {
	  //alert($(objName).css('overflow'));
          $(objName).css('overflow','visible').animate({height: 'show'}, 400);
          $(".topBlock").html("Close filters");
          $(objName).css("height","200");
  } else {
	 // alert($(objName).css('overflow'));	   
	    $(objName).css('overflow','hidden').animate({height: 'hide'}, 200);
            $(".topBlock").html("Open filters");
            $(objName).css("display","block");
            $(objName).css("height","45");
  }
}
</script>

<a href="#" onclick="anichange('#fixed_ct'); return false" class="topBlock">Open filters</a>
<div id="fixed_ct" style="width: 1110px; margin: 0px auto; overflow: hidden; height:45px;">
...
</div>