if (document.images) {

  image1on = new Image();

  image1on.src = "images/home_on.gif";

  image1off = new Image();

  image1off.src = "images/home_off.gif";



  image2on = new Image();

  image2on.src = "images/aboutus_on.gif";

  image2off = new Image();

  image2off.src = "images/aboutus_off.gif";



  image3on = new Image();

  image3on.src = "images/news_on.gif";

  image3off = new Image();

  image3off.src = "images/news_off.gif";



  image4on = new Image();

  image4on.src = "images/volunteers_on.gif";

  image4off = new Image();

  image4off.src = "images/volunteers_off.gif";



  image5on = new Image();

  image5on.src = "images/agencies_on.gif";

  image5off = new Image();

  image5off.src = "images/agencies_off.gif";



  image6on = new Image();

  image6on.src = "images/businesses_on.gif";

  image6off = new Image();

  image6off.src = "images/businesses_off.gif";



  image7on = new Image();

  image7on.src = "images/contactus_on.gif";

  image7off = new Image();

  image7off.src = "images/contactus_off.gif";



  image8on = new Image();

  image8on.src = "images/support_on.gif";

  image8off = new Image();

  image8off.src = "images/support_off.gif";





 image9on = new Image();

  image9on.src = "images/donate_on.gif";

  image9off = new Image();

  image9off.src = "images/donate_off.gif";





}



function turnOn(imageName) {

  if (document.images) {

    document[imageName].src =

      eval(imageName + 'on.src');

  }

}



function turnOff(imageName) {

  if (document.images) {

    document[imageName].src =

      eval(imageName + 'off.src');

  }

}