newWindow = null

function openWindow(url) {
newWindow = window.open(url,"newWin",'titlebar=1,toolbar=1,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=1000,height=740')
}

function closeWindow(url) {
	if (newWindow && !newWindow.closed) {
	newWindow.close()
	}
}