if (custom){ if (custom.add) custom.add.call(this, fn); if (custom.map){ map = function(event){ if (custom.map.call(this, event)) return fn.call(this, event); return false; }; 
if (custom){ if (custom.add) custom.add.call(this, fn); if (custom.map){ map = function(event){ if (custom.map.call(this, event)) return fn.call(this, event); return false; }; 
			var map = fn;			if (custom){				if (custom.add) custom.add.call(this, fn);				if (custom.map){					map = function(event){						if (custom.map.call(this, event)) return fn.call(this, event);						return false;					};
5733	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5733/efb4f770b56fdc035f18061222f0527b9b36ca5f/Element.Event.js/buggy/Element/Element.Event.js