code: function(className)
  	{
  		var el = this.__obj;
  		
  		if (el instanceof Element && className)
  		{
  			if (conbo.isFunction(className))
  			{
  				className = className(el.className);
  			}
  			
  			var classNames = className.trim().split(' ');
  
  			// IE11 doesn't support multiple parameters
  			while (className = classNames.pop())
  			{
  				el.classList.remove(className);
  			}
  		}
  		
  		return this;
  	}
docs: Remove the specified CSS class(es) from the element
  
  @param 		{string|function}		className - One or more CSS class names, separated by spaces, or a function extracts the classes to be removed from the existing className property
  @returns		{conbo.ElementProxy}