function banner(){
	jmp = new Array();
	img = new Array();
	alt = new Array();
	jmp[0] = "http://www.jbc.co.jp";
	img[0] = "./images/070928jbc.jpg";
	alt[0] = "Š”Ž®‰ïŽÐ “ú–{ƒuƒŒ�[ƒ“";
	jmp[1] = "http://www.jiet.or.jp/toiawase.html";
	img[1] = "./images/JIETPR1.jpg";
	alt[1] = "“Á•Ê‰ïˆõ—lƒoƒi�[�L���@Œf�Ú‚²Šó–]‚Ì�Û‚ÍŽ––±‹Ç‚Ü‚Å";
	jmp[2] = "http://www2.jiet.or.jp/system/facilities.asp";
	img[2] = "./images/teikeiPR3.jpg";
	alt[2] = "JIET’ñŒgŽ{�Ý•å�W’†";
	jmp[3] = "http://www.jiet.or.jp/cj";
	img[3] = "./images/8283828a2.jpg";
	alt[3] = "CLUB�@JIET";

	n = Math.floor(Math.random()*jmp.length);
	document.write("<A href='"+jmp[n]+"' target='_blank'>");
	document.write("<IMG src='"+img[n]+"' border='0' alt='"+alt[n]+"'>");
	document.write("</A>");
}