function controlLayer(control,layerID){
    document.getElementById(layerID).style.visibility=control;
  }

var timerFix = "0";

function timerStart(){
    timerFix = setTimeout("controlLayer('hidden','navlinks')",300);
  }

function isSaf() {
    var isSaf = (document.childNodes && !document.all && !navigator.taintEnabled && !navigator.accentColorName) ? true : false;
    return isSaf;
  }