traversal.js

var getChildren = exports.getChildren = function(elem){
	return elem.children;
};

var getParent = exports.getParent = function(elem){
	return elem.parent;
};

exports.getSiblings = function(elem){
	var parent = getParent(elem);
	return parent ? getChildren(parent) : [elem];
};

exports.getAttributeValue = function(elem, name){
	return elem.attribs && elem.attribs[name];
};

exports.hasAttrib = function(elem, name){
	return !!elem.attribs && hasOwnProperty.call(elem.attribs, name);
};

exports.getName = function(elem){
	return elem.name;
};