function acmenu(str)
{
	if (str=="submenu1")
	{
		document.all.submenu1.className="menushow";
	}
	else
	{
		document.all.submenu1.className="menuhide";
	}
	if (str=="submenu2")
	{
		document.all.submenu2.className="menushow";
	}
	else
	{
		document.all.submenu2.className="menuhide";
	}
	if (str=="submenu3")
	{
		document.all.submenu3.className="menushow";
	}
	else
	{
		document.all.submenu3.className="menuhide";
	}
	if (str=="submenu4")
	{
		document.all.submenu4.className="menushow";
	}
	else
	{
		document.all.submenu4.className="menuhide";
	}
		
}