var popup = null;

function DV_closePopup()
{
	if (popup != null)
	{
		if (!popup.closed)
			popup.close();
		popup = null;
	}
}

function DV_openPopup(href, title, width, height)
{
	DV_closePopup();
	var features =
		"location=no"
		+ ",menubar=no"
		+ ",toolbar=no"
		+ ",status=no"
		+ ",resizable=yes"
		+ ",scrollbars=yes"
		+ ",width="
		+ width
		+ ",height="
		+ height;
	popup = window.open(href, title, features);
}

function DV_closeWindow()
{
	window.close();
}

function DV_redirectParent(href)
{
	opener.location.href = href;
	DV_closeWindow();
}