Q:

Is it possible to change display property of div every time page opens

Is is possible to do change display: block; to none; with javascript. I would like to show 2 of them everytime page opens. But I want it to be random and change everytime page opens.
Anybody can help me with this ?
http://jsfiddle.net/WcxdR/1/

A:

The below one will hide two of them randomly each time. You could reuse this to show only two instead.
window.onload = function() {  
  var ran = Math.round(Math.random() * 6);
  document.getElementById("" + ran).style.display = 'none';
  ran = Math.round(Math.random() * 6);
  document.getElementById("" + ran).style.display = 'none';
};

P.S: From top of my head. Not tested.
P.S: Will need to put a check if both call to random gives same number

