jCarousel auto acrol

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Javascript

jQuery

Hi All,
I have implemented a jcarousel ,
Below is the thing i required , slider will slide in auto 1st time once done it will go to 1st slide .
problem i am facing is after auto slide it goes to 1st slide but manually wheni go to last 1 its again to to 1st slide


below is my code please help me

function itemLoadCallbackFunction(carousel, state)
{
  
    for (var i = carousel.first; i <= carousel.last; i++) {
       
        if (i==5) {
            carousel.stopAuto();
        }
    }
}
  
  
  
jQuery(document).ready(function() {
   jQuery('#mycarousel').jcarousel({
        vertical: true,
        scroll: 1,
        auto: 3,
     // wrap: "circular",
        itemLoadCallback: itemLoadCallbackFunction     
     
});
  
  
  
});