var windowName = null;

function OpenCurrencyWindow(url)
{
	if (windowName == null ||windowName.closed)
	{		
		try
		{
			windowName = window.open('http://www.aquariussoft.com/currency-aquarius/currency.asp?' + url,'mywindow','width=420,height=200,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,copyhistory=no,resizable=no');
		}
		catch (e)
		{
		}
	}
	else 
		windowName.focus();
}