function showDiv(whichDiv) 
	{
	if (document.getElementById) 
		{
		document.getElementById(whichDiv).style.visibility='visible';
		} 
	else if (document.layers && !is_omni) 
		{
		document.layers[whichDiv].visibility='visible';
		} 
	else 
		{
		alert("in showdiv all")
		document.all[whichDiv].style.visibility='visible';
		}
	}

function hideDiv(whichDiv) 
	{
	if (document.getElementById) 
		{
		document.getElementById(whichDiv).style.visibility='hidden';
		} 
		else if (document.layers && !is_omni) 
		{
		document.layers[whichDiv].visibility='hidden';
		} 
	else 
		{
		document.all[whichDiv].style.visibility='hidden';
		}
	}