function hilite()
{
var args = hilite.arguments; // args passed in fxn call (elements to change, by ID)
for (var i = 0; i < args.length; i++) // change the class of each element indicated in fxn call
  {
  var elem = document.getElementById(args[i]);
  elem.className = elem.className + "On"; // add "...On" to the class name of the moused over element
  }
}

function unHilite()
{
var args = unHilite.arguments; // args passed in fxn call (elements to change, by ID)
for (var i = 0; i < args.length; i++) // change the class of each element indicated in fxn call
  {
  var elem = document.getElementById(args[i]);
  var n = elem.className.indexOf("On");
  var offClass = elem.className.substring(0,n);
  elem.className = offClass; // remove "...On" from the class name of the moused over element
  }
}