var pics;
pics = new Array();


var objCount = 0;

function preload(name, out, over, press) 
 {    
    pics[objCount] = new Array(4);
    pics[objCount][0] = new Image();
    pics[objCount][0].src = out;
    pics[objCount][1] = new Image();
    pics[objCount][1].src = over;
    pics[objCount][2] = new Image();
    pics[objCount][2].src = press;
    pics[objCount][3] = name;
    objCount++;
  }

function on(name)
{
     for (i = 0; i < objCount; i++) 
      {
       if (document.images[pics[i][3]] != null)
        if (name != pics[i][3]) 
            document.images[pics[i][3]].src = pics[i][0].src;           
        else
            document.images[pics[i][3]].src = pics[i][1].src;        
      
      }
}

function press(name)
{
     for (i = 0; i < objCount; i++) 
      {
       if (document.images[pics[i][3]] != null)
        if (name == pics[i][3]) 
            document.images[pics[i][3]].src = pics[i][2].src;        
      
      }
}

function off()
{
      for (i = 0; i < objCount; i++) 
       {
        if (document.images[pics[i][3]] != null) 
          document.images[pics[i][3]].src = pics[i][0].src; 
       }
}