var SPEED = 20; // brzina promjeranja
      var STEP = 2;  // pomjera broj pixela

      var gDiv = null;
      var gDivWidth = 0;
      var viewImg = null;
      var setup = false;
      var deltaX = 0;
      var timerId = null;
      function Setup() {

            gDiv = document.getElementById("g");
            gDivWidth = gDiv.style.width.substring(gDiv.style.width.length - 2, gDiv.style.width.length) == "px" ? gDiv.style.width.substring(0, gDiv.style.width.length - 2) : gDiv.style.width;
            viewImg = document.getElementById("___view");
            //
            setup=true;
            //alert(gDiv.scrollLeft + ", " + gDiv.scrollWidth + ", " + gDivWidth);
      }
      window.onload = Setup;

      function gScrollLeft() {
               deltaX = -STEP;
               timerId = setInterval("gScroll()", SPEED);
      }
      function gScrollRight() {
               deltaX = STEP;
               timerId = setInterval("gScroll()", SPEED);
      }
      function gScrollStop() {
               deltaX = 0;
               if(timerId != null) clearInterval(timerId);
               timerId = null;
      }

      function gScroll() {
               gDiv.scrollLeft += deltaX;
      }

      function showImage(imgSrc) {
               viewImg.src = imgSrc;
      }