function preload(img) 
{
  var a=new Image(); a.src=img; return a; 
}
definegroups();
function definegroups() {
   var pc_center = preload("images/cellularm_rollover/pc_center_main.gif");
   var pc_center_verbatim = preload("images/cellularm_rollover/pc_center_verbatim.gif");
   var pc_center_catalyst = preload("images/cellularm_rollover/pc_center_catalyst.gif");
   var pc_center_verb_gate = preload("images/cellularm_rollover/pc_center_verb_gate.gif");
   var pc_center_guardit = preload("images/cellularm_rollover/pc_center_guardit.gif");
   var pc_center_responder = preload("images/cellularm_rollover/pc_center_responder.gif");
   var pc_center_chatter = preload("images/cellularm_rollover/pc_center_chatter.gif");
   
   var b_verbatim = preload("images/cellularm_rollover/b_verbatim.jpg");
   var b_verbatimhi = preload("images/cellularm_rollover/bh_verbatim.jpg");    
      
   var b_verb_gate = preload("images/cellularm_rollover/b_verb_gate.jpg");
   var b_verb_gatehi = preload("images/cellularm_rollover/bh_verb_gate.jpg");   
   var b_guardit = preload("images/cellularm_rollover/b_guardit.jpg");
   var b_guardithi = preload("images/cellularm_rollover/bh_guardit.jpg");
   var b_chatter = preload("images/cellularm_rollover/b_chatter.jpg");
   var b_chatterhi = preload("images/cellularm_rollover/bh_chatter.jpg");
   var b_responder = preload("images/cellularm_rollover/b_responder.jpg");
   var b_responderhi = preload("images/cellularm_rollover/bh_responder.jpg");
   var b_catalyst = preload("images/cellularm_rollover/b_catalyst.jpg");
   var b_catalysthi = preload("images/cellularm_rollover/bh_catalyst.jpg");
   
  
  NormalGroup = new Array(
    "pc_center",pc_center,
    "b_verbatim",b_verbatim,
    "b_catalyst",b_catalyst,
    "b_responder",b_responder,
    "b_guardit",b_guardit,
    "b_verb_gate",b_verb_gate,
    "b_chatter",b_chatter
    
  );
 
  VerbatimGroup = new Array(
    "pc_center",pc_center_verbatim,
    "b_verbatim",b_verbatimhi
  );
  
  CatalystGroup = new Array(
    "pc_center",pc_center_catalyst,
    "b_catalyst",b_catalysthi
  );
  
  ResponderGroup = new Array(
    "pc_center",pc_center_responder,
    "b_responder",b_responderhi
  );
  
  GuarditGroup = new Array(
    "pc_center",pc_center_guardit,
    "b_guardit",b_guardithi
  );
  
  Verb_gate_Group = new Array(
    "pc_center",pc_center_verb_gate,
    "b_verb_gate",b_verb_gatehi
  );
  
  ChatterGroup = new Array(
    "pc_center",pc_center_chatter,
    "b_chatter",b_chatterhi
  );
}
function GroupChange(state,group) {
   if (state != "on") {   
      group = NormalGroup;
   }
   for (var i = 0; i < group.length; i += 2) {
      window.document.images[group[i]].src = group[i + 1].src;
   }
   if(state != "on") {
      GroupChange("on",ThisPage);
   }
}