function changeHelpLinks () {
        links = document.getElementsByClassName('vsoHelp');

        links.each ( function(link){
                if (link.innerHTML == '?') {
                          Element.update( link, '<img class="vsoHelpImg" border="0" src="logo/info.gif" style="vertical-align:top; width:1em; height:1em" alt="'+link['title']+'">' );
 
                }
        });
}