uri components in and out

    var e = encodeURIComponent;
    var d = decodeURIComponent;

    var paramsToURI = function(params){
        var uri_components = [];
        for(var i in params){
            if(params.hasOwnProperty(i)) {
                uri_components.push(e(i) + '=' + e(params[i]));
            }
        }
        return uri_components.join('&');
    };

    var URIToParams = function(uri){
        uri = uri.replace(/^.*\?/,'');
        var uri_components = uri.split('&');
        var params = {};
        uri_components.forEach(function(a){
            a = a.split('=');
            params[d(a[0])] = d(a[1]);
        });
        return params;
    };