function preloadimages(imgurlarray)
{
  if (document.images)
  {
    var preloadimage = [];
    for (var i = 0; i < imgurlarray.length; i++)
    {
      preloadimage[i] = new Image();
      preloadimage[i].src = imgurlarray[i];
    }
  }
};

function productmouseover(imagepath)
{
  var productdiv = document.getElementById('productbox');
  productdiv.src = imagepath;
}