var imageName;

if (document.images) {
  alphaovr			= new Image(100,100); alphaovr.src = "http://www.vineyardgardner.org/images/alpha_on.gif";
  alphaoff			= new Image(100,100); alphaoff.src = "http://www.vineyardgardner.org/images/alpha_off.gif";
  vineyarddnaovr		= new Image(100,100); vineyarddnaovr.src = "http://www.vineyardgardner.org/images/vineyarddna_on.gif";
  vineyarddnaoff		= new Image(100,100); vineyarddnaoff.src = "http://www.vineyardgardner.org/images/vineyarddna_off.gif";
  authenticworshipovr		= new Image(100,100); authenticworshipovr.src = "http://www.vineyardgardner.org/images/authenticworship_on.gif";
  authenticworshipoff		= new Image(100,100); authenticworshipoff.src = "http://www.vineyardgardner.org/images/authenticworship_off.gif";
  kidsovr			= new Image(100,100); kidsovr.src = "http://www.vineyardgardner.org/images/kids_on.gif";
  kidsoff			= new Image(100,100); kidsoff.src = "http://www.vineyardgardner.org/images/kids_off.gif";  
  outflowovr			= new Image(116,65); outflowovr.src = "http://www.vineyardgardner.org/images/outflow_on.gif";
  outflowoff			= new Image(116,65); outflowoff.src = "http://www.vineyardgardner.org/images/outflow_off.gif";  
  homeovr			= new Image(116,65); homeovr.src = "http://www.vineyardgardner.org/images/home_on.gif";
  homeoff			= new Image(116,65); homeoff.src = "http://www.vineyardgardner.org/images/home_off.gif";
}

function point( imageName ) {
  if ( document.images ) {
    document[ imageName ].src = eval(imageName + "ovr.src");
  }
}

function nopoint( imageName ) {
  if ( document.images ) {
    document[ imageName ].src = eval(imageName + "off.src");
  }
}