var fontSizeUnit = "pt";
var defaultSize = 10;
var ckName = "mikawa-sp-font";
var ckDays = 2;
var ckPath = "/"

var fsCK = GetCookie( ckName );
if ( fsCK == null ){
  var currentSize = defaultSize; 
}
else{
  var currentSize = eval( fsCK );
}

currentSize_body = currentSize;
currentSize_h1 = 150;
currentSize_h2 = 130;
currentSize_h3 = 120;
currentSize_h4 = 110;
currentSize_h5 = 100;
currentSize_t_h2 = 120;
currentSize_t_h3 = 110;
document.writeln( '<style type="text/css" media="screen,print,tv">' );
document.write( 'body,th,td{font-size:' + currentSize_body + fontSizeUnit+ '}' );
document.write( 'h1{font-size:' + currentSize_h1 + '%}' );
document.write( 'h2{font-size:' + currentSize_h2 + '%}' );
document.write( 'h3{font-size:' + currentSize_h3 + '%}' );
document.write( 'h4{font-size:' + currentSize_h4 + '%}' );
document.write( 'h5,h6{font-size:' + currentSize_h5 + '}%' );
document.write( '#mainmenu h2{font-size:' + currentSize_t_h2 + '%}' );
document.write( '#mainmenu h3,#contentmenu h2,#contentmenu h3{font-size:' + currentSize_t_h3 + '%}' );
document.writeln( '</style>' );

/*===================================
  [関数 fsc]
  引数CMDに渡される値に応じて
  変更後の値を算出しクッキーに書き込む。
====================================*/

function changeFontSize( size ){

  if (size == undefined || size == "") {
	  DeleteCookie( ckName );          //クッキー削除
  } else {
	  SetCookie( ckName , Number(size));          //クッキー書き込み
  }

  location.reload();
}

// _______________________________________ end of function fsc() ___ 


/*===================================
  [関数 SetCookie]
  クッキーに値を書き込む
====================================*/
function SetCookie( name , value ){
  var dobj = new Date();
  dobj.setTime(dobj.getTime() + 24 * 60 * 60 * ckDays * 1000);
  var expiryDate = dobj.toGMTString();
  document.cookie = name + '=' + escape(value) + ';expires=' + expiryDate + ';path=' + ckPath;
}

/*===================================
  [関数 GetCookie]
  クッキーを取得する
====================================*/
function GetCookie (name){
  var arg  = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen){
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

/*===================================
  [関数 getCookieVal]
  クッキーの値を抽出する
====================================*/
function getCookieVal (offset){
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset,endstr));
}

/*===================================
  [関数 DeleteCookie]
  クッキーを削除する
====================================*/
function DeleteCookie(name){
  if (GetCookie(name)){
    document.cookie = name + '=' +
    '; expires=Thu, 01-Jan-70 00:00:01 GMT;path='+ckPath;
  }
}

function setActiveFont () {
	document.getElementById ('f' + currentSize).className = 'active';
}