function importJSON(json_file, function_name)
{
    json_script_tag = document.createElement("script");
    json_script_tag.type    = "text/javascript";
    json_script_tag.languge = "Javascript";
    json_script_tag.src     = json_file;
    if (json_file.indexOf("?") >= 0)
    {
        //json_script_tag.src += "/callback="+function_name;
    } else {
        //json_script_tag.src += "/callback="+function_name;
    }
    json_script_tag.src += "/"+function_name;
    document.getElementsByTagName("body")[0].appendChild(json_script_tag);
}