function op_ginza(){
	URL = "http://www.gardenhotels.co.jp/ginza/index.html";
	UA = navigator.userAgent;
	OS = (UA.indexOf("Mac") >= 0)? "mac":"win";
	BW = (UA.indexOf("Netscape") >= 0)? "ns":"other";
	Safari = (UA.indexOf("Safari") >= 0)? 1:0;
	dummy = (OS=="mac")? URL:"";
	hh = screen.availHeight;
	ww = screen.availWidth;
	if(OS=="mac" && BW=="ns"){hh -= 30;}
	if(Safari){hh -= 10;}
	GW = window.open(dummy,"GINZA","status=0,resizable=1");
	GW.moveTo(0,0);
	GW.resizeTo(ww,hh);
	GW.focus();
	GW.location = URL;
}