I am trying to update my button. but the problem is that I can't have an ID/name with it, right, when doing this? so what if I have multiple forms on the page, and must identify the button?

<input type="submit" value="Upload my File" style="background-color:#00F; font-size:14px; padding:1em;" onclick="
    this.value='Please wait...';
    this.disabled = true;
    var theForm = this.form;
    window.setTimeout(function(){theForm.submit();},3);" />

also, the button doesn't seem to wait 3 seconds when I hit the submit button.