function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}

selected_menu="main";
function setMenu(n){
	if(selected_menu==n){return;}
	var l = document.getElementById("menu2_"+selected_menu);
	if(l){
		l.setAttribute('class','menu2off');
		l.setAttribute('className','menu2off'); //ie用
	}

	selected_menu=n;
	var l = document.getElementById("menu2_"+n);
	l.setAttribute('class','menu2on');
	l.setAttribute('className','menu2on'); //ie用
	if (n == "company") {
		l.style.top = "-22px";
	} else if (n == "ir") {
		l.style.top = "-50px";
	} else if (n == "tech") {
		l.style.top = "-78px";
	} else if (n == "sekou") {
		l.style.top = "-106px";
	} else if (n == "recruit") {
		l.style.top = "-134px";
	}
}
/* テキストサイズを変更 */
function smaller() {
	document.body.style.fontSize = "83%";
	document.getElementById("smallsize").src = "/wwwinc/img/sfont_on.gif";
	document.getElementById("largesize").src = "/wwwinc/img/lfont_off.gif";
	document.getElementById("middlesize").src = "/wwwinc/img/mfont_off.gif";
	setCookie("moji" ,"small");
}
function normsize() {
	document.body.style.fontSize = "100%";
	document.getElementById("middlesize").src = "/wwwinc/img/mfont_on.gif";
	document.getElementById("smallsize").src = "/wwwinc/img/sfont_off.gif";
	document.getElementById("largesize").src = "/wwwinc/img/lfont_off.gif";
	setCookie("moji" ,"middle");
}
function larger()  {
	document.body.style.fontSize = "120%";
	document.getElementById("largesize").src = "/wwwinc/img/lfont_on.gif";
	document.getElementById("middlesize").src = "/wwwinc/img/mfont_off.gif";
	document.getElementById("smallsize").src = "/wwwinc/img/sfont_off.gif";
	setCookie("moji" ,"large");
}
/* 文字サイズのクッキーを取得する */
function getCookie(key){
    tmp = document.cookie+";";
    tmp1 = tmp.indexOf(key,0);
    if(tmp1 != -1){
        tmp = tmp.substring(tmp1,tmp.length);
        start = tmp.indexOf("=",0);
        end = tmp.indexOf(";",start);
        return(unescape(tmp.substring(start+1,end)));
    }
    return("");
}
/* 文字サイズのクッキーをセットする */
function setCookie(key,val){
    tmp = key+"="+escape(val)+";";
    tmp += "expires=Fri, 31-Dec-2030 23:59:59;";
    document.cookie = tmp;
}
/* 文字サイズのユーザー設定値を求める for IE */
mojisize = getCookie("moji");
if  (mojisize == "small") { smaller(); }
else if  (mojisize == "middle") { normsize(); }
else if  (mojisize == "large") { larger(); }
else { normsize(); }