//
function imgPreload()
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4));
  var isIE=(document.all    && (appVer >= 4));
  if (isNC || isIE)
  {
    if (document.images)
    {
      var imgName = imgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < imgPreload.arguments.length; cnt++)
      {
        swImg[imgName][imgPreload.arguments[cnt]] = new Image();
        swImg[imgName][imgPreload.arguments[cnt]].src = imgPreload.arguments[cnt];
      }
    }
  }
}
//
function imgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = imgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}
//
function imgSwap(imgName, imgSrc)
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4));
  var isIE=(document.all    && (appVer >= 4));
  if (isNC || isIE)
  {
    if (document.images)
    {
      var img = document.images[imgName];
      if (!img) img = imgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}
var swImg; swImg=new Array;
//
imgPreload('_rollover0', '/koubun-hr/skin/images/top_menu0001.gif', '/koubun-hr/skin/images/top_menu0002.gif');
imgPreload('_rollover1', '/koubun-hr/skin/images/top_menu0101.gif', '/koubun-hr/skin/images/top_menu0102.gif');
imgPreload('_rollover2', '/koubun-hr/skin/images/top_menu0201.gif', '/koubun-hr/skin/images/top_menu0202.gif');
imgPreload('_rollover3', '/koubun-hr/skin/images/top_menu0301.gif', '/koubun-hr/skin/images/top_menu0302.gif');
imgPreload('_rollover4', '/koubun-hr/skin/images/top_menu0401.gif', '/koubun-hr/skin/images/top_menu0402.gif');
imgPreload('_rollover5', '/koubun-hr/skin/images/top_menu0501.gif', '/koubun-hr/skin/images/top_menu0502.gif');

// display and un-displaying of a sub menu ---------------------------
function showSubMenu(num,cnum) {
    for(i=0; i<cnum; i++)
    {
        mnum='submenu' + (i + 1);
        document.getElementById(mnum).style.display='none';
    }
    document.getElementById(num).style.display='block';

}
//
function hideSubMenu(cnum) {
    for(i=0; i<cnum; i++)
    {
        mnum='submenu' + (i + 1);
        document.getElementById(mnum).style.display='none';
    }
    document.getElementById('submenu5').style.display='block';
}
//
function noStatus() {
    window.status = "";
    return true;
}
//
function lastModify(burl,addr,fi) {
    eurl = burl + addr + "/" + fi + ".wikieditish#wikieditish";
    top.window.location = eurl;
//alert(document.URL);
}
//
function startSwf() {
    if(document.all) window["topswf"].Play();
    if(document.layers) document["topswf"].Play();
}
//
function stopSwf() {
    if (document.all) window["topswf"].StopPlay();
    if (document.layers) document["topswf"].StopPlay();
}
//
function userCheck() {
    var str = document.iform.user.value;
    if( str == "" ) {
        alert("ユーザー名を入力して下さい。");
        return 1;
    }
    return 0;
}
//
function passCheck() {
    var str = document.iform.pass.value;
    if( str == "" ) {
        alert("パスワードを入力して下さい。");
        return 1;
    }
    return 0;
}
//
function allCheck() {
   var check = 0;
   check += userCheck();
   check += passCheck();
   if( check > 0 ) {
      return false;
   }
   return check;
}