var Default = 3;
var tags    = new Array('div','td','tr','p');
var sizing  = new Array('40%','60%','80%','100%','150%','200%','250%','300%');

function FontChange(target,tarF) {
  if (!document.getElementById) return

  var dore = document,tarS = null,fontSize = Default,value,su,cTags;fontSize += tarF;fontF=0;

  if (fontSize < 0) {fontSize = 0; fontF=1}
  if (fontSize > 7) {fontSize = 7; fontF=2}

  Default = fontSize;

  if (!(tarS = dore.getElementById(target))) tarS = dore.getElementsByTagName(target)[0];
  tarS.style.fontSize = sizing[fontSize];
  for (value = 0 ; value < tarS.length ; value++) {
    cTags = tarS.getElementsByTagName(tags[value]);
    for (su = 0 ; su < cTags.length ; su++) cTags[su].style.fontSize = sizing[fontSize];
  }
  if (fontF==1) alert('これ以上小さくなりません。');
  if (fontF==2) alert('これ以上大きくなりません。');;

}


// HpbImgPreload:
//
function HpbImgPreload()
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=false,isN6=false,isIE=false;
  if (document.all && appVer >= 4) isIE=true; else
    if (document.getElementById && appVer > 4) isN6=true; else
      if (document.layers && appVer >= 4) isNC=true;
  if (isNC||isN6||isIE)
  {
    if (document.images)
    {
      var imgName = HpbImgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < HpbImgPreload.arguments.length; cnt++)
      {
        swImg[imgName][HpbImgPreload.arguments[cnt]] = new Image();
        swImg[imgName][HpbImgPreload.arguments[cnt]].src = HpbImgPreload.arguments[cnt];
      }
    }
  }
}
// HpbImgFind:
//
function HpbImgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = HpbImgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}
// HpbImgSwap:
//
function HpbImgSwap(imgName, imgSrc)
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=false,isN6=false,isIE=false;
  if (document.all && appVer >= 4) isIE=true; else
    if (document.getElementById && appVer > 4) isN6=true; else
      if (document.layers && appVer >= 4) isNC=true;
  if (isNC||isN6||isIE)
  {
    if (document.images)
    {
      var img = document.images[imgName];
      if (!img) img = HpbImgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}
var swImg; swImg=new Array;

HpbImgPreload('BS_ROLLOVER1', 'img/btn_b_01.gif', 'img/btn_b_02.gif');
HpbImgPreload('BS_ROLLOVER2', 'img/btn_s_01.gif', 'img/btn_s_02.gif');

HpbImgPreload('BTN_ROLLOVER11', 'img/btn01_1.gif', 'img/btn01_2.gif');
HpbImgPreload('BTN_ROLLOVER22', 'img/btn02_1.gif', 'img/btn02_2.gif');
HpbImgPreload('BTN_ROLLOVER33', 'img/btn03_1.gif', 'img/btn03_2.gif');