var last;
function showHideLayers() { 


  var i, visStr, args, theObj;
  args = showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) { //with arg triples (objNS,objIE,visStr)
    visStr   = args[i+2];
    if (navigator.appName == 'Netscape' && document.layers != null) {
      theObj = eval(args[i]);
      if (theObj) theObj.visibility = visStr;
    } else if (document.all != null) { //IE
      if (visStr == 'show') visStr = 'visible'; //convert vals
      if (visStr == 'hide') visStr = 'hidden';
      theObj = eval(args[i+1]);
      if (theObj) theObj.style.visibility = visStr;
  }} //test for last rollover and close
  if (last != theObj && last)
            if (navigator.appName == 'Netscape' && document.layers != null) {
                        last.visibility = 'hide';
                }else if (document.all != null) {
                        visStr = 'hidden';
                        last.style.visibility = 'hidden';
                        }
last=theObj;

}