code: function getParent( node, className ) {
  		while ( node && node.parentNode ) {
  			if (
  				node.className &&
  				( ' ' + node.className + ' ' ).indexOf( ' ' + className + ' ' ) !== -1
  			) {
  				return node;
  			}
  
  			node = node.parentNode;
  		}
  
  		return false;
  	}
docs: Returns the node or a parent of the node that has the passed className.
  Doing this directly is about 40% faster.
  
  @param {object} node The node to search.
  @param {string} className The class name to search for.
  
  @return {object|boolean} A node on success; false on failure.