jquery.unobtrusive-ajax plugin broken when updating to Jquery 1.9.0

Possible Duplicate:
jQuery 1.7 - Turning live() into on()

//Solution: I simply replaced the four occurrences like the approved answer suggested and unobtrusive ajax plugin is up and working again with jquery 1.9.0

Update//Observe the comments for the answer marked at the bottom which is the best way to solve this.

//Original post: I upgraded to jQuery 1.9.0 but then unobtrusive ajax plugin went down since they deprecated the live method. I tried to replace it like this since the upgrade fixes an other bug for me. However, it does not work. I simply replaced live with on like this:

$("a[data-ajax=true]").on("click", function (evt) {
        evt.preventDefault();
        asyncRequest(this, {
            url: this.href,
            type: "GET",
            data: []
        });
    });

    $("form[data-ajax=true] input[type=image]").on("click", function (evt) {
        var name = evt.target.name,
            $target = $(evt.target),
            form = $target.parents("form")[0],
            offset = $target.offset();

        $(form).data(data_click, [
            { name: name + ".x", value: Math.round(evt.pageX - offset.left) },
            { name: name + ".y", value: Math.round(evt.pageY - offset.top) }
        ]);

        setTimeout(function () {
            $(form).removeData(data_click);
        }, 0);
    });

    $("form[data-ajax=true] :submit").on("click", function (evt) {
        var name = evt.target.name,
            form = $(evt.target).parents("form")[0];

        $(form).data(data_click, name ? [{ name: name, value: evt.target.value }] : []);

        setTimeout(function () {
            $(form).removeData(data_click);
        }, 0);
    });

    $("form[data-ajax=true]").on("submit", function (evt) {
        var clickInfo = $(this).data(data_click) || [];
        evt