var m_nLastMenu = -1;

function OpenSubMenu( nMenuID )
{
	var divSub = document.getElementById('menu_' + nMenuID);
	var divOldMenu = document.getElementById('menu_' + m_nLastMenu);
	
	if( divOldMenu )
	{
		divOldMenu.style.display = 'none';
		m_nLastMenu = -1;
	}
	
	if( divSub )
	{
		divSub.style.display = '';
		m_nLastMenu = nMenuID;
	}
	else
		alert('Invalid Sub Menu');
}

var m_winImage = null;
	
function ViewImage( strImage )
{
	if( m_winImage && !m_winImage.closed )
	{
		m_winImage.location.href = strImage;
		m_winImage.focus();
	}
	else
	{
		m_winImage = window.open(strImage, 'Picture', 'width=600,height=450');
	}
}