Need help to implement CloseOnEscape Key Press for JQModal with IFrame

I am using JqModal in my project. Its a nice JS modal. However i need one help to attach an Close On Escape key press to the JqModal. I am loading eternal content from external URL in JqModal.

For simple Modal where no IFrame is used, its very easy to implement the CloseOnEscape key press feature.

I made it work by updating the jqModal.js file

Steps:

1. Add option "closeOnEsc: true" to the jqModal. So the option will look something like this,

       var p = {
       overlay: 50,
       overlayClass: 'jqmOverlay',
       closeClass: 'jqmClose',
       trigger: '.jqModal',
       ajax: F,
       ajaxText: '',
       target: F,
       modal: F,
       toTop: F,
       onShow: F,
       onHide: F,
       onLoad: F,
       closeOnEsc: true
   };
   

2. Add following code to the jqModal open function.

       var modal = $(h.w);
   
       modal.unbind("keydown");
   
       if (c.closeOnEsc) {
           modal.attr("tabindex", 0);
           modal.bind("keydown", function (event) {
               if (event.keyCode == 27) {
                   event.preventDefault();                        
                   modal.jqmHide();
               }
           });
           modal.focus();
       }