function opensub(objName, oID)
{

	if (document.getElementById('sub'+objName) != null)
	{
		if (objName != oID)
		{
			
                        if (document.getElementById('sub'+oID) != null)
			{
				document.getElementById('sub'+oID).style.display = 'none';
			}
			document.getElementById('sub'+objName).style.display = '';
			openID = objName;
		}
		else
		{
			document.getElementById('sub'+objName).style.display = 'none';
			openID = 0;
		}
	}
       
}