Rollimage         = new Array();
Rollimage[0]      = new Image(524,151);
Rollimage[0].src  = "images/strip-darling_small.png";
Rollimage[1]      = new Image(524,584);
Rollimage[1].src  = "images/strip-darling_large.png";

$(document).ready(function(){

  function repositionImage() {
    var img   = $('img').first(),
        left  = (window.innerWidth - img.width()) / 2;
    img.css('left', left + "px");
  };

  $('img').bind('mouseover', function(){
    $(this).attr('src', Rollimage[1].src);
  });

  $('img').bind('mouseout', function(){
    $(this).attr('src', Rollimage[0].src);
  });

  $(window).bind('resize', repositionImage);

  repositionImage();

});