Div where resizable disabled becomes transparent

If disabled is set to true in initialization, when it is set to false from user action, then set to true again, the div becomes transparent. Need flexibility in code to decide what the div appearance should be. Transparent div isn't always the desired behavior. It might be necessary to show same appearance as when resizable allowed.

<script type='text/javascript'>

$(document).ready(function(){

      $(function() {
         $("#slide").resizable({ disabled: true });
      });  

});

$(document).ready(function(){
      $("#trees").toggle(function(){
            //Open menu      
            $("#slide").stop().animate({ left: "+=208" }, 1200);
            $("#viewup").css("visibility","hidden");
            $("#slide").resizable({ disabled: false });
      }, function(){
            //Close menu
            $("#slide").css("width","236");
            $("#slide").stop().animate({ left: "-=208" }, 1200);
            $("#viewup").css("visibility","visible");
            $("#slide").resizable({ disabled: true });
      }); 

});

</script>

The code under //Close menu causes the div appearance to become transparent. If instead of

            $("#slide").resizable({ disabled: true });

I do

            $("#slide").resizable( "option", "disabled", true );

then resizing isn't deactivated at all.