var pics;
pics = new Array();

function imgover(count) 
{ 
  document.images[pics[count][2]].src=pics[count][1].src; 
}
    
function imgout(count) 
{ 
  document.images[pics[count][2]].src=pics[count][0].src; 
}
    
function preload(count,name, first, second) 
{ 
  pics[count] = new Array(3);   
  pics[count][0] = new Image();   
  pics[count][0].src = first;    
  pics[count][1] = new Image();    
  pics[count][1].src = second;    
  pics[count][2] = name;
}