var browserType;

if (document.layers) {browserType = "nn4"}
if (document.all) {browserType = "ie"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {
   browserType= "gecko"
}

function hide() {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById("prInfo")');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById("prInfo")');
  else
     document.poppedLayer =   
        eval('document.layers["prInfo"]');
  document.poppedLayer.style.display = "none";
}

function toggleLayer(whichLayer)
{
if (document.getElementById)
{

var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"block";
}
else if (document.all)
{

var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"block";
}
else if (document.layers)
{

var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"block";
}
}