var browserOK = false;
  var pics;

  // JavaScript 1.1 browser - oh yes!
  browserOK = true;
  pics = new Array();

var objCount = 0;

function preload(name, first, second) {  
  if (browserOK) {     
    pics[objCount] = new Array(3);
    pics[objCount][0] = new Image();
    pics[objCount][0].src = first;
    pics[objCount][1] = new Image();
    pics[objCount][1].src = second;
    pics[objCount][2] = name;
    objCount++;
  }
}
function on(name){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      if (document.images[pics[i][2]] != null)
        if (name != pics[i][2]) { 
          document.images[pics[i][2]].src = pics[i][0].src;
        } else {
          document.images[pics[i][2]].src = pics[i][1].src;

        }
    }
  }
}

function off(){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      if (document.images[pics[i][2]] != null) 
        document.images[pics[i][2]].src = pics[i][0].src;
    }
  }
}

function nothing(){
	alert("These links don't go anywhere yet!");
}

// preload images
// <!-- ================= Begin New Nav Preload =============== -->
preload("top_home", "/images/top_home_off.gif", "/images/top_home_on.gif");
preload("top_overvu", "/images/top_overvu_off.gif", "/images/top_overvu_on.gif");
preload("top_trade", "/images/top_trade_off.gif", "/images/top_trade_on.gif");
preload("top_news", "/images/top_news_off.gif", "/images/top_news_on.gif");
preload("top_career", "/images/top_career_off.gif", "/images/top_career_on.gif");
preload("top_contacts", "/images/top_contacts_off.gif", "/images/top_contacts_on.gif");

preload("nav_valves", "/images/nav_valves_off.gif", "/images/nav_valves_on.gif");
preload("nav_actu", "/images/nav_actuators_off.gif", "/images/nav_actuators_on.gif");
preload("nav_switches", "/images/nav_switches_off.gif", "/images/nav_switches_on.gif");
preload("nav_featprod", "/images/nav_featprod_off.gif", "/images/nav_featprod_on.gif");
preload("nav_irc", "/images/nav_irc_off.gif", "/images/nav_irc_on.gif");
preload("nav_indus", "/images/nav_indus_off.gif", "/images/nav_indus_on.gif");
// <!-- ================= End New Nav Preload =============== -->
// -->