rem: if ( fn.constructor == Function ) 
add: if ( typeof fn == "function" ) 
context: 	pushStack: function(a,args) {		var fn = args && args[args.length-1];		if ( !fn || fn.constructor != Function ) {			if ( !this.stack ) this.stack = [];			this.stack.push( this.get() );			this.get( a );		} else {			var old = this.get();			this.get( a );			if ( fn.constructor == Function )				this.each( fn );			this.get( old );		}		return this;	}
meta: 5264	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5264/3b4eeab0444e7295802a4f090257ac5dac6f556a/jquery.js/clean/src/jquery/jquery.js