rem: this.className = this.className.replace(new RegExp('(^|\\s)'+className+'(?:\\s|$)'), '$1').clean(); 
add: this.className = this.className.replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)'), '$1').clean(); 
context: 	removeClass: function(className){		this.className = this.className.replace(new RegExp('(^|\\s)'+className+'(?:\\s|$)'), '$1').clean();		return this;	},
meta: 8516	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8516/3142ec74ba3b3466af4f730e72f666966c827e89/Element.js/clean/Native/Element.js