link doesn't work from placed html (scope?)

link doesn't work from placed html (scope?)

Clicking button1 works. Button2, which is placed by clicking a div doesn't work. Is this a scope-problem? 
Is there a workaround for this?

thanks, Albert
  1. $(function() {
    $(".OK_button1").click(function() {
    alert("OK_button1 clicked");
    });
    $(".OK_button2").click(function() {
    alert("OK_button1 clicked");
    });
    $("#clickdiv").click(function() {
    $("#clickdiv").html("<form><input type='submit' value='OK_button2' class='OK_button2'/></form>")
    });
    });
  2. <form>
    <input type="submit" value="OK_button1" class="OK_button1"/>
    </form>
    <div id="clickdiv">click for button2</div>