var date  = new Date(document.lastModified);
var year  = date.getYear();
var month = date.getMonth() + 1;
var day   = date.getDate();
var hour  = date.getHours();
var min   = date.getMinutes();
if(year < 2000){year += 1900;}
if(month < 10){month = "0" +month;}
if(day < 10){day = "0" + day;}
if(hour < 10){hour = "0" + hour;}
if(min < 10){min = "0" + min;}

document.write("最終更新時間:" + year + "/" + month + "/" + day + "　" + hour + ":" + min + "<br/>");