function acPopup(page, width, height) {
	popupWidth = 500
	popupHeight = 500
	screenWidth = screen.width
	screenHeight = screen.height
	popupTop = (screenHeight-popupHeight)/2	
	popupLeft = (screenWidth-popupWidth)/2
	popupAttr = 'top='+popupTop+',left='+popupLeft+',width='+popupWidth+',height='+popupHeight+',scrollbars'
	popup = window.open(page+'.htm', 'popup', popupAttr)
	return false
}

function acPopup500(page) {
	acPopup(page, 500, 500)
}