v=parseInt(navigator.appVersion.substring(0,1));
if (3<=v){
  on1=new Image; on1.src="/img/1on.gif"; on2=new Image; on2.src="/img/2on.gif"; on3=new Image; on3.src="/img/3on.gif"; on4=new Image; on4.src="/img/4on.gif"; on5=new Image; on5.src="/img/5on.gif";
  off1=new Image; off1.src="/img/1off.gif"; off2=new Image; off2.src="/img/2off.gif"; off3=new Image; off3.src="/img/3off.gif"; off4=new Image; off4.src="/img/4off.gif"; off5=new Image; off5.src="/img/5off.gif";
}

function select(imageID, imageName) {
  if (3<=v){ document.images[imageID].src=eval(imageName+".src");}
}