src/javascript/core/utils/Dom.js
function(obj, name) {
		if (obj.className) {
			var regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");
			obj.className = obj.className.replace(regExp, function($0, $1, $2) {
				return $1 === ' ' && $2 === ' ' ? ' ' : '';
			});
		}
	}
function(obj, name) {
		if (obj.className) {
			var regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");
			obj.className = obj.className.replace(regExp, function($0, $1, $2) {
				return $1 === ' ' && $2 === ' ' ? ' ' : '';
			});
		}
	}
Removes specified className from specified DOM element.

@method removeClass
@static
@param {Object} obj DOM element like object to add handler to.
@param {String} name Class name