Im deleting banner images using jQuery and Ajax,but when I have just one image in my list I dont want to delete it.

1. echo '<a class="delete j_bannerdelete" id="'.$rslt_banner['id'].'" href="#">Delete</a> ';

1. $(function(){
    
   //I cal my function to hide my "Delete" link if I have only one image in my bannerli list
   disableDeleteIfOnlyOneItem(1);
   
2. $(function(){
    var banid = null;
    $("a#no").click(function(event){
     event.preventDefault();
     $('.confirm').fadeOut("slow",function(){
      $('.delete_dialog').fadeOut("slow");
     });
     $('.bannerli li[id="'+ banid +'"]').css('background','#f5f5f5');
     banid = null;
    });
    $("a#delete").click(function(event){
     event.preventDefault();
     if (!banid) return;
     $.post(url,{action:'img_delete',id: banid},function(){
      window.setTimeout(function(){
       $('.bannerli li[id="'+ banid +'"]').fadeOut("slow");
      },500);
      $('.confirm').fadeOut("fast",function(){
       $('.delete_dialog').fadeOut("fast");
      });
      disableDeleteIfOnlyOneItem(2); //call function to hide "Delete" link if there is just 1 image
     });
    });
    $('.bannerli').on('click','.j_bannerdelete',function(){
     banid = $(this).attr('id');
     $('.bannerli li[id="'+ banid +'"]').css('background','red');
     $('.delete_dialog p').text('Are you sure you want to remove this image?');
     $('.delete_dialog').fadeIn("slow",function(){
      $('.confirm').fadeIn("slow");
     });
     return false;
    })
   });
3. });

1. function disableDeleteIfOnlyOneItem($value) {
       if($('.bannerli li').length <= $value) {
           $('.j_bannerdelete').hide();
       }
   }