function guideWin(url){

	x = (screen.width  - 557) / 2;
	y = (screen.height - 646) / 2 - 20;
	newWin = window.open(url,'omake','width=589,height=666,toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=0,left='+x+',top='+y+'');
	newWin.focus();
}

var imgNo = Math.floor( Math.random() * 9 ) + 1;
var checkNo = Math.floor( Math.random() * 999999 ) + 100000;

function randomBtn(){
	document.write (
		'<DIV ID="randomBtn"><A HREF="JavaScript:guideWin(\'index.html?' + imgNo + checkNo +'\');void(0);"><IMG SRC="img/btn0' + imgNo + '.gif" ALT="' + imgNo + '" WIDTH="30" HEIGHT="30" BORDER="0"></A></DIV>'
	);
}