// An array of colours that will be applied to h2 tags.
var h2Cols = ['#FFFFFF', '#CDE1E7', '#9BC3CE', '#6AA4B6', '#38869D', '#066885'];

// Main script.
var h2Arr = [];
function h2Setup()
{
 h2Arr = document.getElementsByTagName('h2');
 for (var h = 0; h < h2Arr.length; h++)
 {
  var h2 = h2Arr[h], text = h2.firstChild.nodeValue;
  h2.removeChild(h2.firstChild);
  h2.animNodes = [];
  for (var i = 0; i < text.length; i++)
  {
   var span = document.createElement('span');
   span.appendChild(document.createTextNode(text.substring(i, i+1)));
   h2.appendChild(span);
   h2.animNodes[h2.animNodes.length] = span;
  }
  h2.animCount = 0;
  h2.animTimer = setInterval('h2Anim(' + h + ')', 50);
 }
};
function h2Anim(h)
{
 var h2 = h2Arr[h], c = h2.animCount++, noAnim = 1;
 for (var i = 0; i < h2.animNodes.length; i++)
 {
  var s = h2.animNodes[i], frac = Math.max(0, Math.min(1, (c-i)/10)),
   marg = document.all && !window.opera ? 'marginRight' : 'marginLeft';
  if (s.animDone) continue;
  noAnim = 0;
  s.style.color = h2Cols[Math.floor(frac * 0.99999 * h2Cols.length)];
  if (frac == 1)
  {
   s.style[marg] = '0';
   s.animDone = 1;
  }
  else s.style[marg] = 0.6*(1-frac) + 'em';
 }
 if (noAnim) clearInterval(h2.animTimer);
 h2.style.visibility = 'inherit';
};

if (document.documentElement)
{
 // Hide h2 elements for animation and trigger show on load.
 document.write('<style type="text/css"> h2 { visibility: hidden } </style>');
 var h2aOL = window.onload;
 window.onload = function()
 {
  if (h2aOL) h2aOL();
  h2Setup();
 }
}