$(document).ready(function()
    {
      animation1();
      
    });
    
    function animation1()
    {
     $("#bannerImg").animate({"left": "-=160px"}, 8000);
      setTimeout("animation2()", 22000 );
    }

    function animation2()
    {
     $("#bannerImg").animate({"left": "+=160px"}, 8000);
      setTimeout("animation1()", 30000 );
    }