function exist(image_url){
  var img = new Image();
  img.src = image_url;
  if(img.height > 0){
    return true;
  }
  return false;
}

function dimension(image_url){
  var img = new Image();
  img.src = image_url;
  if(img.height == 0){
    return null;
  }
  ret = new Array(2);
  ret[0] = img.height;
  ret[1] = img.width;
  return ret;
}

function load_no_photo(obj,size){
  if(!obj) return;

  if(size == 's'){
    src_path = "http://www.fujisan.co.jp/images/products/no_photo_s.jpg";
    //pos = dimension(src_path);
    //if(!pos) return;
    pos = new Array(2);
    pos[0] = 90 
    pos[1] = 70
  }else if(size == 't'){
    src_path = "http://www.fujisan.co.jp/images/products/no_photo_t.jpg";
    pos = dimension(src_path);
    if(!pos) return;
  }else{
    src_path = "http://www.fujisan.co.jp/images/products/no_photo.jpg";
    pos = dimension(src_path);
    if(!pos) return;
  }
  obj.src = src_path;
  obj.height = pos[0];
  obj.weight = pos[1];
}

function load_content_image(content_image_t_url){
  if(!exist(content_image_t_url)){
    content_image_t_url = no_photo('t');
  }
  document.getElementById("content_image_t").src = content_image_t_url;
  var content_image_t_dimension = dimension(content_image_t_url);
  if(content_image_t_dimension){
    document.getElementById("content_image_t").height = content_image_t_dimension[0];
    document.getElementById("content_image_t").width = content_image_t_dimension[1];
  }
}


<!--
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_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_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];}
}
//-->