function CreateYears() {
    var i;
    date = new Date();
    var nowYear = (date.getYear()<1000)?
	 date.getYear()+1900:date.getYear();
    var year = nowYear;
    var optionTag;
   
    for( i = 0; i < 3; i++ ) {
        if( year == nowYear ) {
            optionTag = "<option value=\"" + year + "\" selected>" + year + "</option>\n";
        } else {
            optionTag = "<option value=\"" + year + "\">" + year + "</option>\n";
        }
        year++;
        document.write( optionTag );
    }
}

function CreateMonths() {
    var i;
    date = new Date();
    var nowMonth = date.getMonth() + 1;
    var optionTag;
   
    for( i = 1; i <= 12; i++ ) {
        if( i == nowMonth ) {
            optionTag = "<option value=\"" + i + "\" selected>" + i + "</option>\n";
        } else {
            optionTag = "<option value=\"" + i + "\">" + i + "</option>\n";
        }
        document.write( optionTag );
    }
}

function CreateDays() {
    var i;
    date = new Date();
    var nowDay = date.getDate();
    var optionTag;
   
    for( i = 1; i <= 31; i++ ) {
        if( i == nowDay ) {
            optionTag = "<option value=\"" + i + "\" selected>" + i + "</option>\n";
        } else {
            optionTag = "<option value=\"" + i + "\">" + i + "</option>\n";
        }
        document.write( optionTag );
    }
}

function setDay(){
    var year = document.getElementById( "year" ).value;
    var month = document.getElementById( "month" ).value;
    var day = document.getElementById( "day" );

    var lastday = february( year, month );
    var itemnum = day.length;
    if ( lastday - 1 < day.selectedIndex ) {
        day.selectedIndex = lastday - 1;
    }
    day.length = lastday;
    for ( cnt = ( itemnum + 1 ); cnt <= lastday; cnt++ ) {
        day.options[cnt - 1].text = cnt;
    }
}

function february( year, month ){
    var lastday = new Array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 );
    if ( ( (year % 4 == 0) && (year % 100 != 0) ) || ( year % 400 == 0 ) ) {
        lastday[1] = 29;
    }
    return lastday[month - 1];
}

function showDate() {
    var year = document.getElementById( "year" ).value;
    var month = document.getElementById( "month" ).value;
    var day = document.getElementById( "day" ).value;
   
    var show = "あなたが選択したのは、" + year + "年" + month + "月" + day + "日です。";
   
    var selectDate = document.getElementById( "selectDate" );
   
    selectDate.innerHTML = show;
   
    return false;

}


function do_url() {
  var baseURL = "http://queserser03.heteml.jp/kuroyon-royal-hotel-2011-05-31/contents/reservation/index.html?yadNo=333677"
  var stayYear = document.getElementById( "year" ).value;
  var stayMonth = document.getElementById( "month" ).value;
  var stayDay = document.getElementById( "day" ).value;
  var stayCount = document.F1.stayCount.value;
  var adultNum = document.F1.adultNum.value;
  
  var hide = document.createElement('input');
  hide.type = 'hidden';
  hide.name = 'yadNo';
  hide.value = '333677';
  document.getElementById( "day" ).parentNode.appendChild(hide);
  
  document.F1.action = 'http://www.kuroyon-royal.jp/contents/reservation/index.html';


  /*var listURL = baseURL
	+ "&stayYear=" + stayYear
	+ "&stayMonth=" + stayMonth
	+ "&stayDay=" + stayDay
	+ "&stayCount=" + stayCount 
	+ "&adultNum=" + adultNum*/

  //location.href = listURL;
  //window.open(listURL);
}