Sharepoint Arabic Site and Menu Issue Navigation Right to left

facing an issue on Firefox, Safari, Chrome it seems to be a CSS issue, Sharepoint Arabic Menu

Just using following css:

.menu ul.dynamic {

    position: absolute;

    right: 0;

    z-index: -1;

}

Elevated privileges in Sharepoint c#

You should create the SPWeb object within the Elevated privileges block, you shouldn't get the object from SPContext.
So, instead of this statement 'spWeb = SPContext.Current.Web' try to create a object
SPSite site = new SPSite();
SPWeb spWeb = site.OpenWeb();
and use this spWeb to call EnsureUser method.
Hope this should work.