ÿþfunction setZoom(img, dir, width, height, margin, zIndex, delay) {

  setTimeout(function() {

    if (img.dir==dir) {

      img.style.width=width;

      img.style.height=height;

      img.style.margin=margin;

      img.style.zIndex=zIndex;

      img.parentNode.parentNode.style.zIndex=zIndex;

    }

  }, delay);

}



function larger(img, width, height) {

  img.dir='rtl';

  now=parseInt(img.style.zIndex);

  for (i=now+1; i<=10; i++) {

    w=(width*(10+i))/20+'px';

    h=(height*(10+i))/20+'px';

    m=(-i)+'px 0 0 '+(-width*i/40)+'px';

    setZoom(img, 'rtl', w, h, m, i, 20*(i-now));

  }

}



function smaller(img, width, height) {

  img.dir='ltr';

  now=parseInt(img.style.zIndex);

  for (i=now-1; i>=0; i--) {

    w=(width*(10+i))/20+'px';

    h=(height*(10+i))/20+'px';

    m=(-i)+'px 0 0 '+(-width*i/40)+'px';

    setZoom(img, 'ltr', w, h, m, i, 20*(now-i));

  }

}