var banner_page = 1;
var suck = 0;

function previous_banner()
{
    banner_page = banner_page - 1;
    
    changeLogo(banner_page, 1);
}

function next_banner()
{
    banner_page = banner_page + 1;
    
    changeLogo(banner_page, 2);
}

function changeLogo(page, kuda)
{
    new Ajax.Request('/index/newbanner/' + page + '/' + suck + '/',
    {
      method:'get'
      , onSuccess: function(transport){
        var response = transport.responseText || "no response text";
        //alert(response);
        response = response.evalJSON();
		
		if (response.page)
		{
			banner_page = response.page;
		}
		
		if (response.suck)
		{
			suck = response.suck;
		}
		
        var banner = Object.values(response.result);
        var tr = '';
        
        banner.each(function(item, index)
        {
            if (item.photo)
            {
                tr = '<td align="center" valign="middle"><a  target="_blank" href="' + item.link + '"><img src="/public/images/banners/' + item.id + '.' + item.photo + '" title="' + item.description + '" /></a></td>';
				$('trbanners').deleteCell(0);
				var cell = $('trbanners').insertCell(4);
				cell.innerHTML = tr;
            }
        });
		
		$('banners').className = 'links';
      }
      , onFailure: function(){ alert('Something went wrong...'); }
    });
}