// hides / shows div = unblockable popup
(document.getElementById) ? dom = true : dom = false;

function hideIt(idName) {
  if (dom) {document.getElementById(idName).style.visibility='hidden';}
  if (document.layers) {document.layers[idName].visibility='hide';} }

function showIt(idName) {
  if (dom) {document.getElementById(idName).style.visibility='visible';}
  if (document.layers) {document.layers[idName].visibility='show';} }

// Cookie functions
function cowhen(repeat){
var calendar = new Date();
calendar.setTime(calendar.getTime() + (86400000 * repeat));
return calendar;
}

function GetCookie (coname) {
var coarg = coname + "=";
var coarglen = coarg.length;
var colen = document.cookie.length;
var i = 0;
while (i < colen) {
  var j = i + coarglen;
  if (document.cookie.substring(i, j) == coarg)
  return coval (j);
  i = document.cookie.indexOf(" ", i) + 1;
  if (i == 0) break; 
  }
  return null;
}

function coval (diff) {
var theend = document.cookie.indexOf (";", diff);
if (theend == -1)
  theend = document.cookie.length;
  return unescape(document.cookie.substring(diff, theend));
}

function popupDiv(){
//document.cookie = 'name=help1; path=/; expires= '+ cowhen(-1);//delete previous cookie
if(GetCookie("name") == "help2"){return;}//checks if cookie exists if so no popup
document.cookie="name=help2; path=/; expires= " + cowhen(7);//sets cookie for 7 day ( 0.0002 day = 17.28s)
showIt()
}