document.addEventListener("DOMContentLoaded", function() {
        gl('function', function (env) {
            var eid = gl.getFEID();
            var sid = gl.getSID();
            var jsLinks = document.getElementsByClassName('js-gaBtnBilling');
            if (jsLinks.length > 0) {
                for (var i = 0; i < jsLinks.length; i++) {
                    if (jsLinks[i].href !== undefined) {
                        if(jsLinks[i].href.indexOf('feid') >= 0 || jsLinks[i].href.indexOf('fesid') >= 0) {
                            jsLinks[i].href = jsLinks[i].href.replace(/(feid:)([^|&]*)/, "$1" + eid).replace(/(fesid:)([^|&]*)/, "$1" + sid);
                        } else {
                            var params = [{n: "feid", v: eid}, {n: "fesid", v: sid}];
                            var custom2 = jsLinks[i].href.match(/(\[custom2\]=)([^&]*)/) || [];
                            var c2 = custom2[2].split(':');
                            if(c2.length > 1) {
                                params.push({n: c2[0], v: c2[1]});
                            }

                            var new_custom2 = params.map(function(el) { return el.n + ':' + el.v; }).join('|');
                            jsLinks[i].href = jsLinks[i].href.replace(/(\[custom2\]=)([^&]*)/, "$1" + new_custom2);
                        }
                    }
                }
            }

            var inputs = document.getElementsByName('signup[custom2]');
            if(inputs.length > 0) {
                for (var i = 0; i < inputs.length; i++) {
                    if(inputs[i].value.indexOf('feid') >= 0 || inputs[i].value.indexOf('fesid') >= 0) {
                        var new_custom2 = inputs[i].value.replace(/(feid:)([^|&]*)/, "$1" + eid).replace(/(fesid:)([^|&]*)/, "$1" + sid);
                    } else {
                        var params = [{n: "feid", v: eid}, {n: "fesid", v: sid}];
                        var c2 = inputs[i].value.split(':');
                        if(c2.length > 1) {
                            params.push({n: c2[0], v: c2[1]});
                        }
                        var new_custom2 = params.map(function(el) { return el.n + ':' + el.v; }).join('|');
                    }
                    inputs[i].value = new_custom2;
                }
            }
        });
    });