Disable submit button untill select box choices

i've source code how to create SUBMIT BUTTON "ENABLE" when all of selection are chosen.
But the problem is..it doesn't run when i use Jquery plugin 1.9.1 version,. but it work well when i use Jquery plugin 1.5.2 version,

Can someone give me a hand how to mae it work using Jquery 1.9.1 version plugin?

Here is the sample code link
http://jsfiddle.net/Yr59d/

Regards
aat

 

Erm, why are you using Jquery for this? I'm not good with javascript, but I am pretty sure that you don't need a whole JS framework for something simple like this.


Wrote something myself, that works without Jquery

<script type="text/javascript">
function togglesubmit()
{
    if(document.getElementById('ad_type').value != "" && document.getElementById('ad_duration').value != "")
    {
        document.getElementById('submitorder').disabled = false;
    }
    else
    {
        document.getElementById('submitorder').disabled = true;
    }
}
</script>
 
<form id="ad_form" method="post" action="">
    <p>
        <select id="ad_type" name="ad_type" onchange= "togglesubmit()">
            <option value="" selected="selected">Select premium ad type</option>
            <option value="<?php echo TYPE_USER;?>">Featured Agent</option>
            <option value="<?php echo TYPE_LISTING;?>">Featured Listing</option>
        </select>
        <label for="ad_type" class="labelStrong">Advertising Type</label>
    </p>
    <p>
        <select id="ad_duration" name="ad_duration" togglesubmit= "show()">
            <option value="" selected="selected">Select premium ad duration</option>
            <option value="weekly">Weekly</option>
            <option value="fortnightly">Fortnightly</option>
            <option value="monthly">Monthy</option>
        </select>
        <label for="ad_duration" class="labelStrong">Advertising Duration</label>
    </p>

    <p>
        <div id="calender">
        </div>
    </p>
    <p>
        <input type="submit" name="submit" value="Submit" id="submitorder" disabled/>
    </p>
</form>

HTML: