$(document).ready(function() {
  
  //alternate table row colours
  $('table').find('tr:even').addClass('alt');
  
  //assign background image to product image links
  $('.product-image a').each(function(){
    var imgSrc = $(this).find('img').attr('src');
    $(this).css('background-image','url("'+imgSrc+'")');
  })
  
});