Hiding Navigation in CRM 2011

To hide the navigation option in CRM 2011, we can use the below function.

Ex: I am hiding 'RelationShips' Options from Opportunity Navigation.

HideRelationshipsNav("Relationships");

function HideRelationshipsNav() {
        var navBar = document.getElementById("crmNavBar");
        if (!navBar) return;
        var optionItems = navBar.getElementsByTagName("nobr");
        var exitCount = 0;
        for (opt = 0; opt < optionItems.length; opt++)
            for (a = 0; a < arguments.length; a++)
            if (optionItems[opt].innerText == arguments[a]) {
            optionItems[opt].parentNode.style.display = "none";
            exitCount++;
            if (exitCount == arguments.length) return;
        }
    }

Happy Tracing !!!!!!!!!!!!!!!