// Banner array
  var banners = new Array();
  banners[0] = "integration.jpg";
  banners[1] = "performance.jpg";
  banners[2] = "reliability.jpg";
  banners[3] = "safety.jpg";
// End Banner array

// Banner alt-tag array
  var bannersAlts = new Array();
  bannersAlts[0] = "Operating complex networks to the highest standards of safety, reliability and efficiency requires a unique set of skills. We have successfully integrated our UK and US operations.";
  bannersAlts[1] = "We aim to deliver world-class operational and financial performance. Our culture is to improve continuously against demanding targets for safety, reliability and customer service, and to grow value for shareholders.";
  bannersAlts[2] = "Our society depends on the reliable transmission and distribution of electricity and gas. National Grid Transco is focused on the highest levels of reliability - developing our networks to meet changing patterns of supply and demand.";
  bannersAlts[3] = "Nothing we do is more important than the safety of our employees, customers and the general public. A sustainable business must operate to the highest safety standards. "; 
// End Banner alt-tag array

rndIndex = Math.floor(Math.random()*banners.length);

document.write("<img src=\"/ngt_ara_2003_en/images/" + banners[rndIndex] + "\" alt=\"" + bannersAlts[rndIndex]+ "\" title=\"" + bannersAlts[rndIndex]+ "\">\n");