var button_0_ = new Array();
var button_1_ = new Array();
var button_2_ = new Array();
var preload = false;
var buttoncount = 5;
var start = 1;

function changebutton(ButtonNr, ButtonType, Force)
{
var i = 0;
setbutton(ButtonNr,ButtonType,Force);
if(ButtonType == 2)
  {
  for(i = 0; i <= buttoncount; i++)
    {
    if(ButtonNr != i)
      setbutton(i,0,1);
    }
  }  
}

function setbutton(ButtonNr, ButtonType, Force)
{
var buttonobj = ""
var subpage = 0;
var i = 0;
for(i = 0; i <= buttoncount; i++)
  {
  if(parent.dynamic.document.title == i && parent.dynamic.document.title != "")
    subpage = 1;
  }
buttonobj = "resource/button_"+ButtonType+"_"+ButtonNr+".gif";
if((parent.dynamic.document.title != ButtonNr && subpage == 1  && preload == true) || Force == 1)
  parent.fixed.document.images[ButtonNr+start].src = buttonobj;
}

function preloadbutton()
{
for(i = 0; i <= buttoncount; i++)
  {
  button_0_[i] = new Image(); button_0_[i].src = "resource/button_0_"+i+".gif";
  button_1_[i] = new Image(); button_1_[i].src = "resource/button_1_"+i+".gif";
  button_2_[i] = new Image(); button_2_[i].src = "resource/button_2_"+i+".gif";
  }
preload = true;
}