var tim = setInterval(function(){

        changeDeal();

        },6000);
function changeDeal(){
    var car_rank = $("#car_rank").val();
    formParams = 'car_rank='+car_rank;
    $.ajaxSetup(
    {
        timeout:100000,
        dataType:"json",
        error:function(xhr)
        {
            alert(xhr.status+" : "+xhr.statusText);
        }
    }
    )
    //ajax call
    $.post("services/changeDeal.php",formParams,
        function(data)
        {
                $("#car_special_data").fadeOut('medium',function(){
                    $("#car_special_data").html(data.car_deals).fadeIn('medium');
                });
                
            });
}

function book_now(){
   var category_id = $("#class_vehicle :selected").val();
   formParams = 'category_id='+category_id;
    $.ajaxSetup(
    {
        timeout:100000,
        dataType:"text",
        error:function(xhr)
        {
            alert(xhr.status+" : "+xhr.statusText);
        }
    }
    )
    //ajax call
    $.post("services/BookNow.php",formParams,
        function(data)
        {
                window.location="http://www.globalavailability.com/art/guests/?pid=1392&pmpid=&referrer=&availability=show&rcidlist="+data;

            });
}