function preload(imgObj,imgSrc){
  if (document.images){
    eval(imgObj+' = new Image()')
    eval(imgObj+'.src = "'+imgSrc+'"')
  }
}
preload('image01','images/login_on.gif')
preload('image02','images/cancel_on.gif.gif')
preload('image03','images/login_off.gif')
preload('image04','images/login_active.gif')
preload('image05','images/cancel_off.gif')
preload('image06','images/cancel_active.gif')
preload('image07','images/vasiowt.gif')
preload('image08','images/clear.gif')
preload('image09','images/servers.gif')
preload('image10','images/dottedline.gif')
preload('image11','images/vasiomin.gif')