rem: var parentNode = element.parentNode; return drop._containers.detect(function(c) { return parentNode == c }); 
add: var containmentNode; if(drop.tree) { containmentNode = element.treeNode; } else { containmentNode = element.parentNode; } return drop._containers.detect(function(c) { return containmentNode == c }); 
context:   isContained: function(element, drop) {    var parentNode = element.parentNode;    return drop._containers.detect(function(c) { return parentNode == c });  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/dragdrop.js/buggy/javascript/script.aculo.us/dragdrop.js