var navimages;

if (document.images) {
  navimages = new Array();
}

function switchImg (image, count) {
// replaces images with source

 if (document.images) { image.src = navimages[count].src; }

}

function switchOn(id) {
  if (document.images) {
    if (id == 'imghome') {
      document.images[id].src = navimages[7].src;
    }
	else if (id == 'imgservices') {
      document.images[id].src = navimages[8].src;
    }
	else if (id == 'imgattorneys') {
      document.images[id].src = navimages[9].src;
    }
	else if (id == 'imgcharitable') {
      document.images[id].src = navimages[10].src;
    }
	else if (id == 'imgpublications') {
      document.images[id].src = navimages[11].src;
    }
	else if (id == 'imgcontact') {
      document.images[id].src = navimages[12].src;
    }
  }
}

function switchOff(id) {
  if (document.images) {
    if (id == 'imghome') {
      document.images[id].src = navimages[1].src;
    }
	else if (id == 'imgservices') {
      document.images[id].src = navimages[2].src;
    }
	else if (id == 'imgattorneys') {
      document.images[id].src = navimages[3].src;
    }
	else if (id == 'imgcharitable') {
      document.images[id].src = navimages[4].src;
    }
	else if (id == 'imgpublications') {
      document.images[id].src = navimages[5].src;
    }
	else if (id == 'imgcontact') {
      document.images[id].src = navimages[6].src;
    }
  }
}

function prepImages() {
// preload the images if document.images

  if (document.images) {
  // preload all of the images to the cache

    // initialize all images and load them
    navimages[1] = new Image();
    navimages[1].src = 'images/nav_home1.gif';

    navimages[2] = new Image();
    navimages[2].src = 'images/nav_services1.gif';

    navimages[3] = new Image();
    navimages[3].src = 'images/nav_attorneys1.gif';

    navimages[4] = new Image();
    navimages[4].src = 'images/nav_charitable1.gif';

    navimages[5] = new Image();
    navimages[5].src = 'images/nav_publications1.gif';

    navimages[6] = new Image();
    navimages[6].src = 'images/nav_contact1.gif';
    
    navimages[7] = new Image();
    navimages[7].src = 'images/nav_home2.gif';

    navimages[8] = new Image();
    navimages[8].src = 'images/nav_services2.gif';

    navimages[9] = new Image();
    navimages[9].src = 'images/nav_attorneys2.gif';

    navimages[10] = new Image();
    navimages[10].src = 'images/nav_charitable2.gif';

    navimages[11] = new Image();
    navimages[11].src = 'images/nav_publications2.gif';

    navimages[12] = new Image();
    navimages[12].src = 'images/nav_contact2.gif';

  } // document.images
}

  prepImages();