function addToContent(elementId, contentToAdd)
{
	var wtAdValue= document.getElementById( elementId ); // variable to hold element id
	if( wtAdValue != null )
	{
	  var wtContentValue = wtAdValue.getAttribute("content"); // variable to hold value of "content" attribute
	  
	  if( wtAdValue.content == "" )
	  {
	    wtAdValue.content = contentToAdd;
	  }
	  else
	  {
	    wtAdValue.content = (wtContentValue += (";"+contentToAdd));
	  }
	}
}