function navHighlightOn(navid) {
  if (document.getElementById(navid + "Selected")) {
    document.getElementById(navid + "Selected").style.display = "inline";
  }
  if (document.getElementById(navid + "Img")) {
    document.getElementById(navid + "Img").style.marginLeft = "0px";
  }
}

function navHighlightOff(navid) {
  if (document.getElementById(navid + "Selected")) {
    document.getElementById(navid + "Selected").style.display = "none";
  }
  if (document.getElementById(navid + "Img")) {
    document.getElementById(navid + "Img").style.marginLeft = "28px";
  }
}