Google Chrome extension to close notification after user click
<p>The Chrome extension works fine. My problem is that the notification closes in 7 seconds. I want for the user click to close the notification.</p>

<pre><code>function engine(){
    var latestId;
    var ids;
    var messages = [];
    var newmessage = [];

    $.get('http://localhost/site/json.php',function (data){
        var json = $.parseJSON(data);
        messages = json;
        ids = json[0].id;
        if(latestId == ids){
            //no update
        }else if(latestId === undefined){
            var run = {
                type: "basic",
                title: "Title",
                message: "Some message",
                iconUrl : "icon.png",
            };

            chrome.notifications.create(run);
        }    
    });
}
</code></pre>