today=new Date();
y=today.getFullYear();
document.write(y);

<!--アクセス解析-->
document.write("<img src='http://www.sai-g.co.jp/cgi-bin/acc/acclog.cgi?>");
document.write("referrer="+document.referrer+"&");
document.write("width="+screen.width+"&");
document.write("height="+screen.height+"&");
document.write("color="+screen.colorDepth+"'>");