rem: return drop._containers.detect(function(c) { return parentNode == c }); 
add: return drop._containers.detect(function(c) { return containmentNode == c }); 
context:     return drop._containers.detect(function(c) { return parentNode == c });
meta: 6359	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6359/52d313976f72b3f30c833a7675d476a595bc284d/dragdrop.js/buggy/web/js/dragdrop.js