1:var parse_url = function (uri){

 2:    if (typeof uri == 'undefined') {

 3:        uri = location.href;

 4:    }

 5:    else if (uri[0] == '/'){

 6:        uri = location.host + uri;

 7:    }

 8:    var url = uri.match(/^([^:]*:\/\/)?([^:]*:[^@]*@)?([^\/:]*\.[^\/:]*)?(:[^\/]*)?(\/[^?#]*)?(\?[^#]*)?(#.*)?$/i);

 9:    delete url.input;

10:    url.protocol = ((url[1])?url[1]:'http://').split('://')[0];

11:    url.user = (url[2])?url[2].split(':')[0]:undefined;

12:    url.password = (url[2])?url[2].split(':')[1].split('@')[0]:undefined;

13:    url.host = (url[3])?url[3]:location.host;

14:    url.hostname = url.host;

15:    url.port = (url[4])?((isNaN(parseInt(url[4].split(':')[1])))?80:parseInt(url[4].split(':')[1])):80;

16:    url.path = (url[5])?url[5]:'/';

17:    url.pathname = url.path;

18:    url.search = (url[6])?url[6].split('?')[1]:undefined;

19:    url.query = url.search;

20:    url.fragment = (url[7])?url[7].split('#')[1]:undefined;

21:    url.hash = url.fragment;

22:    url.href = ''

23:        + url.protocol + '://'

24:        + ((url.user)?url.user+':'+url.password+'@':'')

25:        + url.host

26:        + ((url.port != 80)?':'+url.port:'')

27:        + url.path

28:        + ((url.search)?'?'+url.search:'')

29:        + ((url.fragment)?'#'+url.fragment:'');

30:    return url;

31:}// /parse_url()