var newwindow = '';

function popupAWindow(url)
{
	if (!newwindow.closed && newwindow.location)
	{
		newwindow.location.href = url;
	}else{
		newwindow=window.open(url,'name','height=400,width=700,menubar=1,resizable=1,scrollbars=1');
		if (newwindow == null)
		{
		    return false;
		}
		if (!newwindow.opener)
		{
		    newwindow.opener = self;
		}
	}
	if (window.focus)
	{
	    newwindow.focus();
	}
	return false;
}