var aNoteWin
window.name = "big";

function popup(topic) {
	if (self.aPopUp == null) {
		aPopUp= window.open(topic,'PopupViewer','scrollbars=yes,location=no,status=no,menubar=0,directories=no,top=25,left=25,width=400,height=300,titlebar=yes')
		self.aNoteWin = aPopUp
	}
	else {
		closePicture()
		aPopUp= window.open(topic,'PopupViewer','scrollbars=yes,location=no,status=no,menubar=0,directories=no,top=25,left=25,width=400,height=300,titlebar=yes')
		self.aNoteWin = aPopUp
	}
}
function closePicture(which) {
	if (self.aPopup != null) {
		self.aPopUp = null
		self.aNoteWin.close()
	}
}