parseUrl = function(url, currentUrl) {
		var key = ['source', 'scheme', 'authority', 'userInfo', 'user', 'pass', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'fragment']
		, i = key.length
		, ports = {
			http: 80,
			https: 443
		}
		, uri = {}
		, regex = /^(?:([^:\/?#]+):)?(?:\/\/()(?:(?:()(?:([^:@\/]*):?([^:@\/]*))?@)?([^:\/?#]*)(?::(\d*))?))?()(?:(()(?:(?:[^?#\/]*\/)*)()(?:[^?#]*))(?:\\?([^#]*))?(?:#(.*))?)/
		, m = regex.exec(url || '')
		;
					
		while (i--) {
			if (m[i]) {
				uri[key[i]] = m[i];
			}
		}

		// when url is relative, we set the origin and the path ourselves
		if (!uri.scheme) {
			// come up with defaults
			if (!currentUrl || typeof(currentUrl) === 'string') {
				currentUrl = parseUrl(currentUrl || document.location.href);
			}

			uri.scheme = currentUrl.scheme;
			uri.host = currentUrl.host;
			uri.port = currentUrl.port;

			var path = '';
			// for urls without trailing slash we need to figure out the path
			if (/^[^\/]/.test(uri.path)) {
				path = currentUrl.path;
				// if path ends with a filename, strip it
				if (/\/[^\/]*\.[^\/]*$/.test(path)) {
					path = path.replace(/\/[^\/]+$/, '/');
				} else {
					// avoid double slash at the end (see #127)
					path = path.replace(/\/?$/, '/');
				}
			}
			uri.path = path + (uri.path || ''); // site may reside at domain.com or domain.com/subdir
		}

		if (!uri.port) {
			uri.port = ports[uri.scheme] || 80;
		} 
		
		uri.port = parseInt(uri.port, 10);

		if (!uri.path) {
			uri.path = "/";
		}

		delete uri.source;

		return uri;
	}
Parse url into separate components and fill in absent parts with parts from current url,
	based on https://raw.github.com/kvz/phpjs/master/functions/url/parse_url.js

	@method parseUrl
	@for Utils
	@static
	@param {String} url Url to parse (defaults to empty string if undefined)
	@return {Object} Hash containing extracted uri components