$(document).ready(function() {
  
  document_width = $(window).width();
  document_height = $(window).height();

  container_left_margin = (document_width-810)/2;
  
  $("#shadow-container").css("margin", "20px 0 0 "+container_left_margin+"px");
  
  $(".shadow").each(function() {
    $(this).css("height", document_height+235);
  });
  
  $(".retailer").each(function(index) {
    $(this).hover(function(){
      $(this).css("background-image", "url(/images/border-hover.jpg)");
    }, function(){
      $(this).css("background-image", "url(/images/border.jpg)");
    });
  });
  
});