var b1dis = "<a href=\"http://www.opticswarehouse.co.uk/";
var bdis = "\"><img src=\"adds/";
var edis = " width=\"720\" height=\"150\" alt=\"www.opticswarehouse.co.uk\" border=\"0\"></a>";
var rnumb = "";
var img = "";

rnumb += Math.floor(Math.random()*3);
img = rnumb;

if (img == "0") {
document.write(b1dis+ "categories.asp?cat=Reloading" +bdis+ "\add-2.png\"" +edis);
}

if (img == "1") {
document.write(b1dis+ "categories.asp?cat=Red+Dot+and+Laser+Sights" +bdis+ "\add-22.png\"" +edis);
}

if (img == "2") {
document.write(b1dis+ "categories.asp?cat=Binoculars" +bdis+ "\add-23.png\"" +edis);
}