$(document).ready(function () {	
    $(".selectedHeroNavItem").each(function () {
        if (this.href.toLowerCase() != location.href.toLowerCase())
            $(this).removeClass("selectedHeroNavItem");
    });

    $(".herosLeftNav").find("a").each(function () {
         if (this.href.toLowerCase() == location.href.toLowerCase())
             $(this).addClass("selectedHeroNavItem");
    });
});