add: Event.observe(this.handle, "mousedown", this.eventMouseDown); 
context:   registerEvents: function() {    if(this.active) return;    Event.observe(document, "mouseup", this.eventMouseUp);    Event.observe(document, "mousemove", this.eventMouseMove);    Event.observe(document, "keypress", this.eventKeypress);  },
meta: 4973	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4973/2763f23a530881acd784be63eed95031c54a4f3a/dragdrop.js/buggy/src/dragdrop.js