function showapop(txt)
{ var newdiv = document.createElement("div");
  if (txt!="") {document.getElementById("padapop").innerHTML = "";}
  newdiv.innerHTML = txt;
  var container = document.getElementById("padapop");
  container.appendChild(newdiv);
  if (!document.body.scrollTop)
  { var y = document.documentElement.scrollTop;
    var y2 = document.documentElement.scrollBottom; }
  else
  { var y = document.body.scrollTop;
    var y2 = document.body.scrollBottom; }
  document.getElementById("bkg").style.top = y + "px"; 
//  document.getElementById("bkg").style.height = (y2-y) + "px"; 
  document.getElementById("bkg").style.display = "block";
  document.getElementById("dim").style.display = "block";
  return false; }

function hideapop()
{ document.getElementById("dim").style.display = "none";
  document.getElementById("bkg").style.display = "none";
  if (reb) {document.getElementById("apop").style.backgroundColor = "#f2f2f2"; reb=false;}
  return false; }