// JavaScript Document

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


// ブラウザウィンドウ開く //

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


function MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}



// ブラウザウィンドウ ナビゲーション //

//   以下の global 変数が必要()
//   var imageview_img_prefix = 'img/img';
//   var imageview_img_max = 16;
//   var imageview_img_suffix = '.jpg'
//   var imageview_img_titles = {1: 'title1', 2: 'title2'};

var IE = navigator.appVersion.match(/MSIE/);
// wrapper for document.getElementById
function myGetElementById(doc, id) {
  if (IE) {
    return doc.all[id];
  } else {
    return doc.getElementById(id);
  }
}

/* return : query value(string)  null: cant find     */
function myGetQuery(myKeyWord){
   myKeyWord = "&" + myKeyWord + "=";
   myValue = null;
   myStr = location.search;
   myLen = myStr.length;
   myStr = "&" + myStr.substring(1,myLen) + "&";
   myOfst = myStr.indexOf(myKeyWord);
   if (myOfst != -1){
      myStart = myOfst + myKeyWord.length;
      myEnd   = myStr.indexOf("&" , myStart);
      myValue = myStr.substring(myStart,myEnd);
      myValue = unescape(myValue);
   }
   return myValue;
}



function initImageView() {
  var count = myGetQuery("count");
  if (!(count > 0 && count <= imageview_img_max)) {
    count = 1;
  }
  myGetElementById(document, 'imageview-no').childNodes[0].data = count;
  var title = myGetElementById(document, 'imageview-title');
  if (title && typeof imageview_img_titles != 'undefined' && imageview_img_titles[count]) {
    title.childNodes[0].data = imageview_img_titles[count];
  }
  myGetElementById(document, 'imageview-frame').src = imageview_img_prefix+count+imageview_img_suffix;
  if (count <= 1) {
    myGetElementById(document, 'imageview-prev').style.visibility = 'hidden';
  }
  if (count >= imageview_img_max) {
    myGetElementById(document, 'imageview-next').style.visibility = 'hidden';
  }
}

/* op: 'prev', 'next' */
/* image: id="imageview-frame" */
/* next: id="imageview-next" */
/* prev: id="imageview-prev" */
function ImageView(op) {
  var count = myGetElementById(document, 'imageview-no').childNodes[0];
  if (op == 'next') {
    if (count.data < imageview_img_max) {
      myGetElementById(document, 'imageview-frame').src = imageview_img_prefix+(++count.data)+imageview_img_suffix;
    }
  } else {
    if (count.data > 1) {
      myGetElementById(document, 'imageview-frame').src = imageview_img_prefix+(--count.data)+imageview_img_suffix;
    }
  }

  var title = myGetElementById(document, 'imageview-title');
  if (title && typeof imageview_img_titles != 'undefined' && imageview_img_titles[count.data]) {
    title.childNodes[0].data = imageview_img_titles[count.data];
  }

  if (count.data <= 1) {
    myGetElementById(document, 'imageview-prev').style.visibility = 'hidden';
  } else {
    myGetElementById(document, 'imageview-prev').style.visibility = 'visible';
  }
  if (count.data >= imageview_img_max) {
    myGetElementById(document, 'imageview-next').style.visibility = 'hidden';
  } else {
    myGetElementById(document, 'imageview-next').style.visibility = 'visible';
  }
}