// Global variables
var isNav, isIE, isDom
var coll = ""
var styleObj = ""
if (document.getElementById) {
  isDom = true;
}
if (parseInt(navigator.appVersion) >= 4) {
  if (navigator.appName == "Netscape") {
    isNav = true
  } else {
    isIE = true
    coll = "all."
    styleObj = ".style"
  }
}

// Convert object name string or object reference
// into a valid object reference
function getObject(objectName) {
  var returnObject
  if (typeof objectName == "string") {
    if (isDom) {
      returnObject = document.getElementById(objectName);
    } else {
      returnObject = eval("document." + coll + objectName);
    }
  } else {
    returnObject = objectName
  }
  return returnObject
}

function showInfoPane() {
  var objectToShow = getObject("infoPane")
  objectToShow.style.visibility = "visible"
}

function hideInfoPane() {
  var objectToHide = getObject("infoPane")
  objectToHide.style.visibility = "hidden"
}