function openDIV(byVal)
{	
	ddmenuitem = document.getElementById(byVal);
	if(ddmenuitem) 
	{
		ddmenuitem.style.visibility = 'visible';
	}
	

}
function closeDIV(byVal)
{
	ddmenuitem = document.getElementById(byVal);
	if(ddmenuitem) 
	{
		if(ddmenuitem.style.visibility == 'visible')
		{
			ddmenuitem.style.visibility = 'hidden';
		}
	}
}