if (document.images) {

  var first_off = new Image();

  var first_on = new Image();

  

  var second_off = new Image();

  var second_on = new Image();

  

}



function loadImages() {

  if (document.images) {

     first_off.src = "http://www.citruslife.com/header4a.jpg";

     first_on.src = "http://www.citruslife.com/header4b.jpg";

     

     second_off.src = "http://www.citruslife.com/header5a.jpg";

     second_on.src = "http://www.citruslife.com/header5b.jpg";

   }

}



function activate(imgName) {

  if (document.images) {

    if ( eval(imgName + "_on.complete") ) {

      document.images[imgName].src = eval(imgName + "_on.src");

    }

  }

}



function deactivate(imgName) {

  if (document.images) {

    if ( eval(imgName + "_off.complete") ) {

      document.images[imgName].src = eval(imgName + "_off.src");

    }

  }

}