function getQueryString(key, default_) {

    if (default_ == null) default_ = "";
    key = key.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regex = new RegExp("[\\?&]" + key + "=([^&#]*)");
    var qs = regex.exec(window.location.href);
    if (qs == null)
        return default_;
    else
        return qs[1];
}
String.prototype.formatSymbols = function () {
    return this.replace(/'/g, ''').replace(/®/g, '®').replace(/™/g, '™');
}