jQuery.url = function() {
    var segments = {};
    var parsed = {};
    var options = {url:window.location,strictMode:false,key:["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],q:{name:"queryKey",parser:/(?:^|&)([^&=]*)=?([^&]*)/g},parser:{strict:/^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,loose:/^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/}};
    var parseUri = function() {
        str = decodeURI(options.url);
        var m = options.parser[options.strictMode ? "strict" : "loose"].exec(str);
        var uri = {};
        var i = 14;
        while (i--) {
            uri[options.key[i]] = m[i] || ""
        }
        uri[options.q.name] = {};
        uri[options.key[12]].replace(options.q.parser, function($0, $1, $2) {
            if ($1) {
                uri[options.q.name][$1] = $2
            }
        });
        return uri
    };
    var key = function(key) {
        if (!parsed.length) {
            setUp()
        }
        if (key == "base") {
            if (parsed.port !== null && parsed.port !== "") {
                return parsed.protocol + "://" + parsed.host + ":" + parsed.port + "/"
            } else {
                return parsed.protocol + "://" + parsed.host + "/"
            }
        }
        return(parsed[key] === "") ? null : parsed[key]
    };
    var param = function(item) {
        if (!parsed.length) {
            setUp()
        }
        return(parsed.queryKey[item] === null) ? null : parsed.queryKey[item]
    };
    var setUp = function() {
        parsed = parseUri();
        getSegments()
    };
    var getSegments = function() {
        var p = parsed.path;
        segments = [];
        segments = parsed.path.length == 1 ? {} : (p.charAt(p.length - 1) == "/" ? p.substring(1, p.length - 1) : path = p.substring(1)).split("/")
    };
    return{setMode:function(mode) {
        strictMode = mode == "strict" ? true : false;
        return this
    },setUrl:function(newUri) {
        options.url = newUri === undefined ? window.location : newUri;
        setUp();
        return this
    },segment:function(pos) {
        if (!parsed.length) {
            setUp()
        }
        if (pos === undefined) {
            return segments.length
        }
        return(segments[pos] === "" || segments[pos] === undefined) ? null : segments[pos]
    },attr:key,param:param}
}();