var rolloverFlag = true;
function hide_tab_all(flag)
{
	if(rolloverFlag == true)
		for(t=0;t<4;t++)
			document.all["day_" + t].style.visibility = "hidden";
}

function show_nalsee(flag)
{
	hide_tab_all();
	if(rolloverFlag == true)
		document.all["day_" + flag].style.visibility = "visible";
}