rem: Sortable.options(dropon).onChange(element); 
add: droponOptions.onChange(element); 
context:   onEmptyHover: function(element, dropon) {    if(element.parentNode!=dropon) {      var oldParentNode = element.parentNode;      dropon.appendChild(element);      Sortable.options(oldParentNode).onChange(element);      Sortable.options(dropon).onChange(element);    }  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/dragdrop.js/buggy/javascript/script.aculo.us/dragdrop.js