// JavaScript Document

function changeBlock(){
var ID=new Array()
ID[01]='MID_NOW.png'
ID[02]='MID_AND.png'
ID[03]='MID_WHY.png'

var change=Math.floor(Math.random()*ID.length)
if (change==0)
change=1
document.write('<img src="../_img/puzzle/'+ID[change]+'" class="puzzle">')
}
changeBlock()