var imgs = new Array(18);     
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  imgs[1] = "http://www.cyberspaceministry.org/images/navigation/por/po-home2.gif";     
  imgs[2] = "http://www.cyberspaceministry.org/images/navigation/por/po-menu1.gif";     
  imgs[3] = "http://www.cyberspaceministry.org/images/navigation/por/po-menu2.gif";     
  imgs[4] = "http://www.cyberspaceministry.org/images/navigation/por/po-mis1.gif";     
  imgs[5] = "http://www.cyberspaceministry.org/images/navigation/por/po-mis2.gif";     
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  imgs[17] = "http://www.cyberspaceministry.org/images/navigation/por/po-plan2.gif";     
  
  function preload() {    
  var tmp = null;    
  for (var j = 0; j < imgs.length; j++) {      
  tmp = imgs[j];      
  imgs[j] = new Image();      
  imgs[j].src = tmp;    
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  }   
  
  void(preload());    
  
  function imgSwap(img, swap) {    
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