jQuery(function(){
   if (document.location.protocol == "https:")
      var dr = "https://ssltrustgate.com/hittours.com/";
   else
      var dr = "http://www.hittours.com/";
   jQuery(".jpng").jQIR("png", dr + "header/images/");//png、imageフォルダの指定
   jQuery(".jjpg").jQIR("jpg", dr + "header/images/");//jpg
   jQuery(".jgif").jQIR("gif", dr + "header/images/");//gif
});