var aImagesLoad = new Array("..Images/Home/AmstadOff.jpg","..Images/Home/AmstadOn.jpg","..Images/Home/BlackstoneOff.jpg",
                            "..Images/Home/BlackstoneOff.jpg","..Images/Home/BlackstoneOn.jpg","..Images/Home/AmstadOff.jpg");



function PreLoadImages( aImages)
{
    if ( document.images )
 {
  for ( var i = 0; i < aImages.length; i++ )
  {
   var imageObject = new Image();
   imageObject.src = aImages[ i ];
  }
 }
}
PreLoadImages(aImagesLoad);