Unable to hide LoginAsDifferentUser menu in SP2010

Question

I need to hide the "Sign In as Different User" option on the "Welcome" menu for all users. This is for SharePoint 2010. I have tried adding a customaction feature using the xml below, which didn't work. I heard a rumor that this is a known issue, so I then tried adding the javascript below to the bottom of the body tag in v4.master.

The HideCustomAction does not seem to work for any of the Welcome menu items, but the javascript works fine for "PersonalizePage" and "PersonalInformation," which I am also hiding. I have condidered jQuery, but suspect it might have the same issue, which is the inability to consistently find the "LoginAsDifferentUser" menu item.

The only thing I saw work was putting the javascript into a CEWP, but it worked the first time I tried it, then quit working.

Any help is greatly appreciated. TIA

Elements.xml:

<HideCustomAction
    GroupId="PersonalActions"
    Id="LoginAsDifferentUser"
    Location="Microsoft.SharePoint.StandardMenu">
</HideCustomAction>

javascript:

<script type="text/javascript">
    var objects = document.getElementsByTagName("ie:menuitem");
    for (var i = 0; i < objects.length; i++) {
       itm = objects[i];
       if (itm.id.match("LoginAsDifferentUser") != null) {
           var parentNodeOfMenuItem = itm.parentNode;
           parentNodeOfMenuItem.removeChild(itm);
       }
    }
</script> 

Answer 1

This is where I wish I was more of a jQuery developer and less of a hack... I couldn't get jQuery to return the ie:menuitem tags to iterate over so I had to use javaScript to get them.. However, I was able to hack together a solution for you.

Maybe someone can come up with something more elegant, but this works:

jQuery(document).ready(function($){

 var objects = document.getElementsByTagName("ie:menuitem");    
 for (var i = 0; i < objects.length; i++) {       
    itm = objects[i];
    if ($('#' + itm.id).attr("text") == "Sign in as Different User")
    {
        $('#' + itm.id).remove();
    }
}

})

Answer 2

Did you debug the Javascript to see why it wouldn't find the menu item?

I'd recommend using jQuery, as it will almost always find the element you want, provided you structure the selectors properly.