vk leave all groups

vk_groups = {
   clean:function(){
      var REQ_CNT=1000;
      var DEL_REQ_DELAY=400;
      var SCAN_REQ_DELAY=400;
      var box=null;
      var mids=[];
      var del_offset=0;
      var abort=false;
      var deldone=function(){
            box.hide();
            vkMsg(IDL("ClearDone"),3000);
      };
      var del=function(callback){
         if (abort) return;
         var del_count=mids.length;
         ge('vk_del_msg').innerHTML=vkProgressBar(del_offset,del_count,310,IDL('deleting')+' %');
         var item_id=mids[del_offset];
         if (!item_id){
            ge('vk_del_msg').innerHTML=vkProgressBar(1,1,310,' ');
            del_offset=0;
            callback();
         } else
         dApi.call('groups.leave', {gid:item_id},function(r,t){
            del_offset++;
            setTimeout(function(){del(callback);},DEL_REQ_DELAY);
         });
      };

      var _count=0;
      var cur_offset=0;
      var scan=function(){
         if (cur_offset==0) ge('vk_scan_msg').innerHTML=vkProgressBar(cur_offset,2,310,IDL('listreq')+' %');

         var params={extended:1};
         params['count']=REQ_CNT;
         params['offset']=cur_offset;
         dApi.call('groups.get',params,function(r){
            if (abort) return;
            var ms=r.response;
            if (!ms[0]){ del(deldone);  return; }
            var _count=ms.shift();
            ge('vk_scan_msg').innerHTML=vkProgressBar(cur_offset,_count,310,IDL('listreq')+' %');
            for (var i=0;i<ms.length;i++) if (!ms[i].is_admin) mids.push(ms[i].gid);
            if (cur_offset<_count){ cur_offset+=REQ_CNT; setTimeout(scan,SCAN_REQ_DELAY);} else del(deldone);
         });
      };

      var run=function(){

         box=new MessageBox({title: IDL('LeaveGroups'),closeButton:true,width:"350px"});
         box.removeButtons();
         box.addButton(IDL('Cancel'),function(r){abort=true; box.hide();},'no');
         var html='</br><div id="vk_del_msg" style="padding-bottom:10px;"></div><div id="vk_scan_msg"></div>';
         box.content(html).show();
         scan();
      };

      vkAlertBox(IDL('DelVideos'),IDL('LeaveAllGroupsConfirm'),run,true);
   }
}
vk_groups.clean();