function SetNavTab(tabName)
{
	var selectedTab = $("tab-" + tabName);
    if(selectedTab && selectedTab.firstChild)
    {
	    selectedTab.firstChild.className = "tabSelected";
    }
}

function HideTab(tabName)
{
    var hiddenTab = $("tab-" + tabName);
    Element.hide(hiddenTab);
}