pics = new Array();
var objCount = 0; 
var trayFocus=0;
var trayExist=0;

function preload(name,first,second) 
  {   
    pics[objCount] = new Array(3);
    pics[objCount][0] = new Image();
    pics[objCount][0].src = first;
	pics[objCount][1] = new Image();
    pics[objCount][1].src = second;
    pics[objCount][2] = name;
    objCount++;
  }

function on(name)
  {
    for (i = 0; i < objCount; i++) {
     if (document.images[pics[i][2]] != null)
      if (name != pics[i][2]) { 
         document.images[pics[i][2]].src = pics[i][0].src;
         } else
	      {
           document.images[pics[i][2]].src = pics[i][1].src;
	      }
         }
  }

function off()
  {
    for (i = 0; i < objCount; i++) {
     if (document.images[pics[i][2]] != null) 
      document.images[pics[i][2]].src = pics[i][0].src;
     }
  
  }