imageNames = new Array('basket');

overImages = new Array('images/shopping-basket-ani.gif');

outImages = new Array('images/shopping-basket-still.gif');

imageCount = imageNames.length;
overPics = new Array(imageCount);
outPics = new Array(imageCount);

for (var i=0 ; i<imageCount ; i++)
{
  overPics[i] = new Image;
  overPics[i].src = overImages[i];
  outPics[i] = new Image;
  outPics[i].src = outImages[i];
}

function swImg(num, up)
{
  if (document.images)
  {
    var imgName = imageNames[num];
  
    if (up == 'b')
    {
      document[imgName].src = overPics[num].src;
    }
    else if (up == 'a')
    {
      document[imgName].src = outPics[num].src;
    }
  }
}

function isblank(str)
{
  for(var i = 0; i < str.length; i++) 
  {
    var char = str.charAt(i);
    if ((char != ' ') && (char != '\n') && (char != '\t')) return false;
  }
  return true;
}