function addLoadEvent(func)
{
  var oldonload = window.onload;
  if (typeof window.onload != 'function')
  {
    window.onload = func;
  }
  else
  {
	window.onload = function() 
	{
		oldonload();
		func();
	}
  }
}

function prepareInputsForHints()
{
	var inputs = document.getElementsByTagName("textarea");
	for (var i=0; i<inputs.length; i++)
	{

		// test to see if the hint span exists first
		if (inputs[i].parentNode.getElementsByTagName("span")[0])
		{
			// the span exists!  on focus, show the hint
			inputs[i].onfocus = function () 
			{
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
			// when the cursor moves away from the field, hide the hint
			inputs[i].onblur = function () 
			{
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}

	// repeat the same tests as above for selects

	var selects = document.getElementsByTagName("select");

		for (var k=0; k<selects.length; k++)
		{
			if (selects[k].parentNode.getElementsByTagName("span")[0]) 
			{
				selects[k].onfocus = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
				selects[k].onblur = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}
}
addLoadEvent(prepareInputsForHints);