imgOpen = new Image();
imgOpen.src = "page_image/tree_open.gif";
imgClose = new Image();
imgClose.src = "page_image/tree_close.gif";
var swImg; swImg=new Array;

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];
      }
    }
  }
}

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;
}

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;
    }
  }
}

function gfotkwd() {
	ID = document.getElementById("kwd");
	if ( ID.value == "検索キーワード入力") ID.value = "";
	ID.style.color = "black";
}

function lfotkwd() {
	ID = document.getElementById("kwd");
	if (ID.value == "") {
		ID.value = "検索キーワード入力";
		ID.style.color = "silver";
	}
}

function chkkwd() {
	ID = document.getElementById("kwd");
	if (ID.value == "検索キーワード入力") 
		ID.value = "";
	return true;
}

function clears(num) {
	for ( i = 1 ; i <= num ; i++ ) {
		ID = document.getElementById("sm"+i);
		ID.selectedIndex = 0;
	}

	ID = document.getElementById("kwd");
	ID.value = "検索キーワード入力"; 
	ID.style.color = "silver";

}

function service_show(num) {
	var objID=document.getElementById( "service_menu_sub" + num );
	var buttonID=document.getElementById( "service_menu" + num );

	if(objID.className=='close') {
		objID.style.display='block';
		objID.className='open';
	}
	else{
		objID.style.display='none';
		objID.className='close';
	}
}

function show(num) {

	var objID=document.getElementById( "menu_sub" + num );
	var buttonID=document.getElementById( "menu_category" + num );
	var imgID=document.getElementById( "tree" + num );

	if(objID.className=='close') {
		objID.style.display='block';
		objID.className='open';
		imgID.src = imgOpen.src;
	}
	else{
		objID.style.display='none';
		objID.className='close';
		imgID.src = imgClose.src;

	}

}