document.getElementById("mfiNav").className = "LeftNavSubOff";
     document.getElementById("fsNav").className = "LeftNavSubOn";
     document.getElementById("BookNav").className = "LeftNavOn";
     document.getElementById("BookNavList").style.display = "inline";
     document.getElementById("NewsLetterNav").className = "LeftNavOff";
     document.getElementById("NewsLetterNavList").style.display = "none";