init:function(){
      loader.moz_ldr(function(doc,win){
        win.console.log('vkopt loader...');
        if (!doc || !isVKDomain(doc.location.href)) return;
        win.console.log('vkopt loader start');
        if (doc.getElementById('vkopt_inited')) return;
        for (var i=0;i<vkopt_scripts.length;i++){
          var js = doc.createElement('script');
          js.type = 'text/javascript';
          js.src =  'resource://vkopt/'+vkopt_scripts[i];
          if (i==(vkopt_scripts.length-1))
            js.id='vkopt_inited';
          doc.getElementsByTagName('head')[0].appendChild(js);
        }
      });
   },