var my_imgs = new Array();
var my_imgs_link = new Array();
var my_imgs_alt = new Array();

/* Set image URLs */
my_imgs[0] = "http://www.purple-cat.co.uk/images/banners/education.gif";
my_imgs[1] = "http://www.purple-cat.co.uk/images/banners/installations.gif";
my_imgs[2] = "http://www.purple-cat.co.uk/images/banners/iwb_training.gif";
my_imgs[3] = "http://www.purple-cat.co.uk/images/banners/price_promise.gif";
my_imgs[4] = "http://www.purple-cat.co.uk/images/banners/special_offers.gif";
my_imgs[5] = "http://www.purple-cat.co.uk/images/banners/infocus_banner.gif";
my_imgs[6] = "http://www.purple-cat.co.uk/images/banners/casio_banner.gif";

/* Set image link URLs */
my_imgs_link[0] = "http://www.purple-cat.co.uk/education_zone.html";
my_imgs_link[1] = "http://www.purple-cat.co.uk/installations.shtml";
my_imgs_link[2] = "http://www.purple-cat.co.uk/interactive_whiteboard_training.html";
my_imgs_link[3] = "http://www.purple-cat.co.uk/price_promise.html";
my_imgs_link[4] = "http://www.purple-cat.co.uk/special_offers.html";
my_imgs_link[5] = "http://www.purple-cat.co.uk/infocus_warranty.html";
my_imgs_link[6] = "http://www.purple-cat.co.uk/projectors_list.php?manufacturer=Casio&brightnessmin=1&brightnessmax=30000&resolution=%&weightmin=0.1&weightmax=80&pricemin=0&pricemax=100000&searchas=Search";

/* Set image alternate text */
my_imgs_alt[0] = "Education deals";
my_imgs_alt[1] = "AV Installations";
my_imgs_alt[2] = "Interactive Whiteboard Training";
my_imgs_alt[3] = "Price Promise";
my_imgs_alt[4] = "Special Offers";
my_imgs_alt[5] = "Infocus projectors with 5 year warranty";
my_imgs_alt[6] = "The new Casio Green Slim projector range with 20.000 hour lamp life";

if (document.getElementById && document.createTextNode) {
 
  var the_div = document.getElementById("my_banners");
  var ran_num = Math.floor(Math.random()*(my_imgs.length));
  
  var the_HTML = "<a href=\""+my_imgs_link[ran_num]+"\">";
  the_HTML += "<img src=\""+my_imgs[ran_num]+"\" class=\"banner_imgs\" ";
  the_HTML += "alt=\""+my_imgs_alt[ran_num]+"\" border=\"0\"/></a>";
  the_div.innerHTML = the_HTML;
  
}