function myBack() {
	history.back();
}
function myRefOpen(myFile) {
	subWindow=window.open('','subwin','toolbar=yes,menubar=yes,location=yes,scrollbars=yes,resizable=yes,width=750,height=560');
	subWindow.location.href=myFile;
	subWindow.focus();
	subWindow.moveTo(0,0);
}
function myRuby(myFile) {
	var myImage = new Image();
	myImage.src = myFile;
	document.reibun.src = myImage.src;
}