// https://github.com/websanova/js-url -- jQuery plugin version
;(function($){
	$.extend({
		url: function(arg, url) {
			var _ls = url || window.location.toString();
	
			if(_ls.substring(0,2) === '//') _ls = 'http:' + _ls;
			else if(_ls.split('://').length === 1) _ls = 'http://' + _ls;
	
			url = _ls.split('/');
			var _l = {auth:''}, host = url[2].split('@');
	
			if(host.length === 1) host = host[0].split(':');
			else{ _l.auth = host[0]; host = host[1].split(':'); }
	
			_l.protocol=url[0], _l.hostname=host[0], _l.port=(host[1]||'80'), _l.pathname='/' + url.slice(3, url.length).join('/').split('?')[0].split('#')[0];
			var _p = _l.pathname;
			if(_p.split('.').length === 1 && _p[_p.length-1] !== '/') _p += '/';
			var _h = _l.hostname, _hs = _h.split('.'), _ps = _p.split('/');
	
			if(!arg) return _ls;
			else if(arg === 'hostname') return _h;
			else if(arg === 'domain') return _hs.slice(-2).join('.');
			else if(arg === 'tld') return _hs.slice(-1).join('.');
			else if(arg === 'sub') return _hs.slice(0, _hs.length - 2).join('.');
			else if(arg === 'port') return _l.port || '80';
			else if(arg === 'protocol') return _l.protocol.split(':')[0];
			else if(arg === 'auth') return _l.auth;
			else if(arg === 'user') return _l.auth.split(':')[0];
			else if(arg === 'pass') return _l.auth.split(':')[1] || '';
			else if(arg === 'path') return _p;
			else if(arg[0] === '.')
			{
				arg = arg.substring(1);
				if($.isNumeric(arg)) {arg = parseInt(arg); return _hs[arg < 0 ? _hs.length + arg : arg-1] || ''; }
			}
			else if($.isNumeric(arg)){ arg = parseInt(arg); return _ps[arg < 0 ? _ps.length - 1 + arg : arg] || ''; }
			else if(arg === 'file') return _ps.slice(-1)[0];
			else if(arg === 'filename') return _ps.slice(-1)[0].split('.')[0];
			else if(arg === 'fileext') return _ps.slice(-1)[0].split('.')[1] || '';
			else if(arg[0] === '?' || arg[0] === '#')
			{
				var params = _ls, param = null;
	
				if(arg[0] === '?') params = (params.split('?')[1] || '').split('#')[0];
				else if(arg[0] === '#') params = (params.split('#')[1] || '');
	
				if(!arg[1]) return params;
	
				arg = arg.substring(1);
				params = params.split('&');
	
				for(var i=0,ii=params.length; i<ii; i++)
				{
					param = params[i].split('=');
					if(param[0] === arg) return param[1];
				}

				return null;
			}
	
			return '';
		}
	});
})(jQuery);