rem: this[evt] = function(){ var ret = oldFunc.apply(this, arguments); newFunc.apply(this, arguments); return ret; } 
add: var oldFunc = this[evt]||function(){}; 
context: 		this[evt] = function(){			var ret = oldFunc.apply(this, arguments);			newFunc.apply(this, arguments);			return ret;		}
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/dojo.js.uncompressed.js/buggy/www/resources/dojo-ajax/dojo.js.uncompressed.js