Event handlers in Jquery

I have some event handlers on my row expand as shown in this example.

http://datatables.net/release-datatables/examples/api/row_details.html

As you can see from this code, it is also using the JQuery "live" handler to expand the row, such as

$('#example tbody td img').live('click', function () {

This was deprecated in version 1.9.1 of Jquery.

If I instead use, off/off as 1.9.1 recommends, it does not listen to my event. I was able to work around this issue by adding in the jquery migrate events for die/live to my code directly.

jQuery.fn.live = function (types, data, fn) {
jQuery(this.context).on(types, this.selector, data, fn);
return this;
};

jQuery.fn.die = function (types, fn) {
jQuery(this.context).off(types, this.selector || "**", fn);
return this;
};

However, I am curious as to why the data table doesn't naturally respond to the off/on event?

Thanks for your time,

Brent