<!--
/* Picture Swap */

var browserOK = true;
var navImages = new Array();
var navImageIndex = 0;
var selectedNav = '';
function preLoad(name,before,after,navx,navy) {
  if (browserOK) {
    navImages[navImageIndex] = new Array(3);
    navImages[navImageIndex][0] = new Image(navx,navy);
    navImages[navImageIndex][0].src = before;
    navImages[navImageIndex][1] = new Image(navx,navy);
    navImages[navImageIndex][1].src = after; 
    navImages[navImageIndex][2] = name;
    navImageIndex++;
  }
}

function browserCheck(val){
  browserOK = val;
}

function imageIndex(imgname) {
  for (i=0; i < navImageIndex; i++) {
  if (navImages[i][2] == imgname)
    return i;
  } 
    return -1;
}

function activateNav(imgname,msg) {
  if (browserOK) {
    var imgindex = imageIndex(imgname);
    if (imgindex != -1)
      document.images[imgname].src = navImages[imgindex][1].src;
  }
  window.status = msg;
}

function deactivateNav(imgname) {
  if (browserOK) {
    var imgindex = imageIndex(imgname);
    if (imgindex != -1)
      if (selectedNav != imgname)
        document.images[imgname].src = navImages[imgindex][0].src;
  }
  window.status = "";
}

function resetNav() {
  if (browserOK) {
    var imgindex = imageIndex(selectedNav);
    if (imgindex != -1)
      document.images[selectedNav].src = navImages[imgindex][0].src;
  }
  selectedNav = '';
  window.status = "";
}

function selectNav(imgname) {
  prevSelectedNav = selectedNav;
  selectedNav = imgname;
  deactivateNav(prevSelectedNav);
}

//-->