function pickRandomBanner() { 
var path="/abmi/images/headers/";
var picture = new Array(
"ag-landscape.jpg",
"animal-closeup.jpg",
"forrest-nomountains.jpg",
"grassland-01.jpg",
"grassland-02.jpg",
"grassland-03.jpg",
"industrial.jpg",
"moss.jpg",
"mountains.jpg",
"plant-closeup.jpg",
"wetland-01.jpg",
"wetland-02.jpg",
"winter.jpg"
);
// Array to hold filenames 

  var now  = new Date(); 
  var which =   now.getSeconds()%picture.length;
  document.writeln("<IMG src='" + path + "/" + picture[which] + "' alt ='Alberta biodiversity mointoring ' />");
  
  
 }