rem: for(var i = 0; i < this.observers.length; i++) if(this.observers[i].element && (this.observers[i].element == element)) this.observers.splice(i,1); 
add: this.observers = this.observers.reject( function(o) { return o.element==element }); 
context:   removeObserver: function(element) {  // element instead of obsever fixes mem leaks    for(var i = 0; i < this.observers.length; i++)      if(this.observers[i].element && (this.observers[i].element == element))        this.observers.splice(i,1);  },
meta: 2355	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2355/9867ca01ad65827d23c0bf6cc14d8a64137e927d/dragdrop.js/clean/tracks/public/javascripts/dragdrop.js