(function($)
{
    /*
     * $.import_js() helper (for javascript importing within javascript).
     */
    
    $.extend(true,
    {
        import_js_imported : [],
        
        import_js : function(script)
        {
            var found = false;
            for (var i = 0; i < $.import_js_imported.length; i++)
                if ($.import_js_imported[i] == script) {
                    found = true;
                    break;
                }
            
            if (found == false) {
                $("head").append('<script type="text/javascript" src="' + script + '"></script>');
                $.import_js_imported.push(script);
            }
        }
    });
    
})(jQuery);