var rlink = "<a href=/v3/customers/index.shtml#cc";
var imgbegin = "><img src=/v3/customers/images/customer-front-";
var imgend   = ".png width=180 height=275 border=0></a>";
var totalImages = 22;

var SelectImage=Math.round((Math.random()* totalImages)+1);

function showCustomerImage() {
  document.write(rlink+SelectImage+imgbegin+SelectImage+imgend);
}