var at = blUtil.getHashVar("at");

            if (at)
            {
                var trigger = JSON.parse(blUtil.decodeURLSafeB64(at));

        getVarsFromHashString:
        function(strHash)
        {
            var vars = [],
                hash;
            var hashes = strHash.slice(strHash.indexOf('#') + 1).split('&');
            for (var i = 0; i < hashes.length; i++)
            {
                hash = hashes[i].split('=');
                vars.push(hash[0]);
                vars[hash[0]] = this.decodeURL(hash[1]);
            }
            return vars;
        }
...
        getHashVars: function()
        {
            return $.getVarsFromHashString(window.location.href);
        }
...
        getHashVar: function(name)
        {
            return $.getHashVars()[name];
        }