function MM_showHideLayers() { //v2.0
  var i, visStr, args, theObj;
  args = MM_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;
  } }
}

function MM_changeProp(objStrNS,objStrIE,theProp,theValue) { //v2.0
  var NS = (navigator.appName == 'Netscape');
  var objStr = (NS)?objStrNS:objStrIE;
  if (( NS && (objStr.indexOf('document.layers[')!=0 || document.layers!=null)) ||
      (!NS && (objStr.indexOf('document.all[')   !=0 || document.all   !=null))) {
    var obj = eval(objStr);
    if ((obj != null) && (theProp.indexOf("style.") != 0 || obj.style != null)) {
      eval(objStr+'.'+theProp + '="'+theValue+'"');
  } }
}