SharePoint 2010 webservices calls to do various things to the page

/**********************/
function removeMySiteLink(username) {
    var webAbsoluteUrl = window.location.protocol + "//" + window.location.host + _spPageContextInfo.siteServerRelativeUrl;
    var art = null;
    var migratedDate = "";
    //IE
    if (window.ActiveXObject) {
        art = new ActiveXObject("Microsoft.XMLHTTP");
    }//Mozilla, chrome, etc.,
    else if (window.XMLHttpRequest) {
        art = new XMLHttpRequest();
    }
    else {
        throw new Error("XMLHttpRequest not supported");
    }
    
    if (art == null) return null;
    console.log(_spPageContextInfo.webAbsoluteUrl);
    art.open("POST", webAbsoluteUrl + "/_vti_bin/userprofileservice.asmx", false);
    art.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
    art.setRequestHeader("SOAPAction", "http://microsoft.com/webservices/SharePointPortalServer/UserProfileService/GetUserProfileByName");    
    var xsoap = "<?xml version=\"1.0\" encoding=\"utf-8\"?><soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:tns=\"http://schemas.microsoft.com/sharepoint/soap/\"><soap:Body><GetUserProfileByName xmlns=\"http://microsoft.com/webservices/SharePointPortalServer/UserProfileService\"><AccountName>"+username+"</AccountName></GetUserProfileByName></soap:Body></soap:Envelope>";
    console.log('may need try catch');


    try {
        art.send(xsoap);
        console.log('may need try catch...');

        var xmlDoc = art.responseXML;

        var elmValue = xmlDoc.getElementsByTagName("Value");
        for (i = 0; i < elmValue.length; i++) {

            if (elmValue[i].parentNode.parentNode.parentNode.childNodes[2].textContent == 'uob-migrated') {
                migratedDate = elmValue[i].childNodes[0].nodeValue;
            }
        }

        console.log(migratedDate);
    } catch(ex) {
        migratedDate = null;
    }


    //ID_MySiteMenu
    if (migratedDate.length > 0) {
        var numDaysToRetain = 30;
        var dateMigratedmillisecs = new Date(migratedDate).getTime() + (numDaysToRetain * 24 * 60 * 60 * 1000);
        var timestamp = new Date().getTime();
        if (timestamp > dateMigratedmillisecs) {

            //these are relevant for mysite.brighton.ac.uk
            $('#zz7_MySiteTopNavigationMenu div ul li.static:nth-child(1)').remove();
            $('#ID_MySiteMenu').remove();
            $('.ms-globalnavicon').remove();
            
            //this applies to staff and mydepartment as we as mysite
            jQuery('#ID_MySiteMenu').remove();
        }
        else {
            console.log('keep mysite for now');
        }

    }
}
console.log('in custom UoB Javascript');
ExecuteOrDelayUntilScriptLoaded(getWebUserData, "sp.js");

var context = null;
var web = null;
var currentUser = null;
function getWebUserData() {
    context = new SP.ClientContext.get_current();
    web = context.get_web();
    currentUser = web.get_currentUser();
    currentUser.retrieve();
    context.load(web);
    context.executeQueryAsync(Function.createDelegate(this, this.onSuccessMethod), Function.createDelegate(this, this.onFailureMethod));
}
function onSuccessMethod(sender, args) {
    var userObject = web.get_currentUser();
    console.log('User name:' + userObject.get_title() + '\n Login Name:' + userObject.get_loginName());
    //no we dont actually need to escape the slasshes userObject.get_loginName().replace('\', '\\');
    //unecessary escapedLoginName = userObject.get_loginName().replace(/\\/g, "\\\\")
    //console.log('escapedLoginName:' + escapedLoginName);
    //removeMySiteLink(escapedLoginName);

    //this works 
    removeMySiteLink(userObject.get_loginName());
}
function onFailureMethod(sender, args) {
    console.log('request failed ' + args.get_message() + '\n' + args.get_stackTrace());
}
ExecuteOrDelayUntilScriptLoaded(getWebUserData, "sp.js");