var newwindow_width = screen.availWidth
var newwindow_height = screen.availHeight - 100
var linkWindow = null

function ShowLink (url) 
{
	if (!linkWindow || linkWindow.closed)
	{
		linkWindow = window.open (url,'link','width=' + newwindow_width + ',height=' + newwindow_height + ',left=0,top=0,toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes')
	}
	
	else 
	{
		linkWindow.focus ()
		linkWindow.location.href = url
	}
}