function pickRandom(range) 

  {

    if (Math.random)

            {

      return Math.round(Math.random() * (range-1));

            }

    else 

            {

      var now = new Date();

      return (now.getTime() / 1000) % range;

    }

  }

  

  function loadImage()

  {  

    var ic = imgs.length; // Number of alternative images

    var choice = pickRandom(ic);

    newImage = "url(" + imgs[choice] + ")";

 

                        var imageCtr = document.getElementById('adContainerImage');

                        imageCtr.setAttribute("src", imgs[choice][0]);

                        imageCtr.style.cursor = 'pointer';

                        addDomEvent(imageCtr, "click", function () { window.location = imgs[choice][1]; });                      

  }

 

            function addDomEvent(domElement, eventType, responseFunction)

            {

                        if (window.attachEvent)

                        {

                                    domElement.attachEvent('on' + eventType, responseFunction);

                        }

                        else if (window.addEventListener)

                        {

                                    domElement.addEventListener(eventType, responseFunction, false);

                        }

                        else

                        {

                                    alert('Error Loading Random Image');

                        }

            }