var buttons = new Array(5);
var buttons_roll = new Array(5);

if (document.images) {

    var i = 0;
    for(i=0;i<5;i++)
    {
      buttons[i] = new Image();
      buttons[i].src = "./images/labyrinth2_item" + (i+1) +".jpg";    
    }

    for(i=0;i<5;i++)
    {
      buttons_roll[i] = new Image();
      buttons_roll[i].src = "./images/labyrinth2_item" + (i+1) +"_roll.jpg";    
    }    
}

function buttondown( index )
{
    if (document.images) 
    {
      document.getElementById("index"+index).src = buttons_roll[index].src;
    }
}
function buttonup ( index )
{
    if (document.images) 
    {
        document.getElementById("index"+index).src = buttons[index].src;
    }
}