function doPreload()
{
  var the_images = new Array('images/btn_home_01.gif','images/btn_contact_01.gif');
  preloadImages(the_images);
}

function preloadImages(the_images)
{
  for(loop = 0; loop < the_images.length; loop++)
  {
    var an_image = new Image();
    an_image.src = the_images[loop];
  }
}



function liteMe(myImage)
{
  document.images[myImage].src = "images/btn_" + myImage + "_01.gif";
}
function darkMe(myImage)
{
  document.images[myImage].src = "images/btn_" + myImage + "_00.gif";
}