How to call the Android keyboards ok button function in HTML5

I'm using the code below to create a form. Using this in a android device shows a ok button when the keyboard shows up. I've seen alot of questions on how to show different keyboards. Yet i cant seem to find/figure out how to use my own function once this ok button has been clicked using javascript/jquery.

    <form id="AndroidForm">
        <input id="myforminput" type="url" maxlength="20">
    </form>

If anyone has any input about how it can be done, i'd appreciate your help, thanks!