var popUpWin = '';

function popupWindow(url) 
{
	if (popUpWin && !popUpWin.closed) 
	{
		popUpWin.close();
	}
	popUpWin = window.open(url, "Info", "scrollbars=yes, toolbar=no, directories=no, menubar=no, resizable=yes, width=400, height=350");
	popUpWin.focus();
	if (!popUpWin.opener) 
		popUpWin.opener = self;
}