rem: removeObserver: function(element) { 
add: removeObserver: function(element) { 
context:   removeObserver: function(element) {  // element instead of obsever fixes mem leaks    this.observers = this.observers.reject( function(o) { return o.element==element });  },
meta: 3974	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3974/af9adbf17404d887f31369756326b0109da7ae2b/dragdrop.js/buggy/root/static/js/dragdrop.js