function ajaxUpdate(script,update,params,method,indicator){
    new Request({
      url:        script,
      method:     method,
      onRequest: function(request){
         if($(indicator)){
            $(indicator).setStyle('display','');
         }
      },
      evalScripts:  false,
      onComplete:   function(request){
         if($(indicator))
            $(indicator).setStyle('display','none');
      },
      onSuccess:  
         function(response) {
            if($(update)){
		            $(update).set('html', response);
		         }
        }
    }).send(params);
}

function getTrademarks(page,group_id,update){
  var url = 'page='+page+'&ajax=1&action=group_trademarks&group_id='+group_id;
  ajaxUpdate('index.php',update,url,'get','');
}