<button class="aui-button" id="my_action_btn"><span class="aui-icon aui-icon-small aui-iconfont-configure"></span> Button with icon</button>
 
<script type="text/javascript">
  AJS.toInit(function() {
  AJS.$('button.cf_myform').hide();
  AJS.$('#my_action_btn').click(function() {
	AJS.$('button.cf_myform').click();
  });
});
</script>