rem: hoverclass: null 
add: hoverclass: null, tree:       false 
context:   add: function(element) {    element = $(element);    var options = Object.extend({      greedy:     true,      hoverclass: null      }, arguments[1] || {});    // cache containers    if(options.containment) {      options._containers = [];      var containment = options.containment;      if((typeof containment == 'object') &&         (containment.constructor == Array)) {        containment.each( function(c) { options._containers.push($(c)) });      } else {        options._containers.push($(containment));      }    }        if(options.accept) options.accept = [options.accept].flatten();    Element.makePositioned(element); // fix IE    options.element = element;    this.drops.push(options);  },
meta: 939	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/939/bb2276098a5a21c35e5ee72b3097bd9d7caa919f/dragdrop.js/buggy/actionpack/lib/action_view/helpers/javascripts/dragdrop.js