rem: Element.Class.remove(drop.element, drop.hoverclass); 
add: if(drop.hoverclass) Element.Class.remove(drop.element, drop.hoverclass); 
context:   deactivate: function(drop) {    Element.Class.remove(drop.element, drop.hoverclass);    this.last_active = null;  },
meta: 863	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/863/3f913f897829fb026ef98df2d57f8da94ee5339d/dragdrop.js/buggy/public/javascripts/dragdrop.js