/*
Show/hide layer JS
From: http://www.netlobo.com/div_hiding.html

Elements
-CSS:  div#tagname {margin: 0px 20px 0px 20px; display: none;} 
  switch tagname to desired section title

-JS function  toggleLayer(whichLayer)
-Link/Button to toggle section on
  <a href="javascript:toggleLayer('tagname');">Show Data</a>
-Toggle off
  <input type="reset" name="reset" value="Cancel" onclick="javascript:toggleLayer('tagname');">
-Add layer to show/hide
  <div id="tagname">

********************************/
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";
  }
} // end function