rem: this.isIE = true; 
add: this.isIE = 'undefined'; 
context: Log4js.FileAppender = function( file) {	this.layout = new Log4js.SimpleLayout();	this.isIE = true;		this.file = file || "C:\\log4js.log";			try{		this.fso = new ActiveXObject("Scripting.FileSystemObject");	} catch(e){		try {			netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");			this.fso =  Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);			this.isIE = false; //mozilla & co		} catch (e) {}	}};
meta: 2141	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2141/b0c58f09c3bf106450447263059885d62b3f736a/log4js.js/buggy/log4js/src/main/js/log4js.js