function CreateWorkSubTask(key) {
    console.log(key);
    var span = jQuery("#create_work_sub_task_link span");
    if (span.length) {
        console.log("make wait");
        var oldLabel = span.text();
        var sp_width = span.css("width");
        console.log(sp_width);
        span.css("display", "block");
        span.css("width", sp_width);
        span.text("waiting...");
        var dots = window.setInterval( function() {
            if (span.text().length > 9) {
                span.text(span.text().substring(0,7));
            } else {
                span.text(span.text() + ".");
            }
        }, 100)
    }
    var p = jQuery.post(
        "/plugins/servlet/createWorkSubTask",
        {"issueKey": key},
        function(data) {
            console.log(data);
            if (data.uri) {
                window.location.replace(data.uri);
            } else {
                alert(data.message);
                window.clearInterval(dots);
                span.text(oldLabel);
            }
        },
        "json"
    );
    p.fail(function() {
        console.log("fail");
        alert("can't create work sub-task, please contact with jira administrators");
        window.clearInterval(dots);
        span.text(oldLabel);
    });
    return false;
}