Why doesn't this JavaScript work in IE8?

Question

<form action="http://google.com"&gt;
  <input type="submit" onclick="javascript:this.disabled='disabled';return true">
</form>

It works in Firefox, but not in IE8, Safari (It should forward me to Google's site, it but doesn't happen.). Why?

Answer 1

You don't need the javascript: pseudoprotocol. This should work:

onclick="this.disabled=true"

and you don't need to return true, that'll happen automatically.

Answer 2

Try this instead:

<input type="submit" onclick="this.disabled='disabled';form.submit()">

Edit: Added form. as per wamp's comment.