function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


function toggleLayer(whichLayer) {
  if (document.getElementById) {
// this is the way the standards work
    var style2 = document.getElementById(whichLayer).style;
    style2.display = style2.display? "":"block";
  }
  else if (document.all)
  {
// this is the way old msie versions work
    var style2 = document.all[whichLayer].style;
    style2.display = style2.display? "":"block";
  }
  else if (document.layers)
  {
// this is the way nn4 works
  var style2 = document.layers[whichLayer].style;
  style2.display = style2.display? "":"block";
  }
}