Detect select box element on page?

[Fiasst]

Hi, I'd like to check every page of my site - onLoad to see if it contains a select input field.

I've been trying to achieve this but with no luck.

How can this be done?

Thanks.

[Fotiman]

window.onload = function() { 
  var selectElList = document.getElementsByTagName('select'); 
  if (selectElList.length > 0) { 
    alert('This page has select elements'); 
  } 
}