I need to change the thumb image depending on the value.

In PR2 I was able to do the following:

Code:
change:function(t,value,opts){
                           if (opts == -1){
                               t.getThumb().setCls("slider-against");
                           }else if (opts== 0){
                               t.getThumb().setCls("slider-neutral");
                           }else if (opts == 1){
                               t.getThumb().setCls("slider-for");
                           }
                           
                       }
Is there a way to access the sliderfield thumb? getThumb is no longer available in PR3