/*
===========================================================

Last Updated:09/21/2001

insomnia!Web Labo.
http://www3.airnet.ne.jp/insomnia/
http://www3.airnet.ne.jp/insomnia/labo/fsc/fscC.html
===========================================================
*/

/*
========== ::: settei ::: ==========
*/

// tanni
var fontSizeUnit = "%";

// henaka
var perOrder = 6;

// shoki
var defaultSize = 100;

// cookie
var ckName = "FontSCc";

// cookie yuukou
var ckDays = 2;

// cookie pas
var ckPath = "/"


/*
========== ::: page load atai ::: ==========
*/

// cookie
var fsCK = GetCookie( ckName );

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


/*
========== ::: head style ::: ==========
*/
document.writeln( '<style type="text/css">' );
//document.writeln( 'body{font-size:' + currentSize + fontSizeUnit+ '}' );
//document.writeln( 'h1,h2{font-size:' + currentSize + fontSizeUnit+ '}' );
document.writeln( 'table{font-size:' + currentSize + fontSizeUnit+ '}' );
document.writeln( '</style>' );


/*===================================
====================================*/

function fsc( CMD ){

  if ( CMD == "larger" ){
    var newSize = Number( currentSize + perOrder );
    SetCookie( ckName , newSize );
  }

  if ( CMD == "smaller" ){
    if ( currentSize != perOrder ){
      var newSize = Number( currentSize - perOrder );
      SetCookie( ckName , newSize );
    }
    else{
      var newSize = Number( currentSize );
    }
  }


  if ( CMD == "default" ){
    DeleteCookie( ckName );
  }

  location.reload();
}

// _______________________________________ end of function fsc() ___ 


/*===================================
====================================*/
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;
}

/*===================================
====================================*/
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;
}

/*===================================
====================================*/
function getCookieVal (offset){
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset,endstr));
}

/*===================================
====================================*/
function DeleteCookie(name){
  if (GetCookie(name)){
    document.cookie = name + '=' +
    '; expires=Thu, 01-Jan-70 00:00:01 GMT;path='+ckPath;
  }
}

//EOF