rem: this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); 
add: function(o) { return o[eventName]; } 
context:       this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
meta: 6359	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6359/52d313976f72b3f30c833a7675d476a595bc284d/dragdrop.js/buggy/web/js/dragdrop.js