Question

since my Chrome Extension didn’t work under Mac I broke the code down and found the problem:

background.js

chrome.browserAction.onClicked.addListener(function(tab){
    alert("Goin to");
    chrome.tabs.executeScript(tab.id, {file: "script.js"});
});

script.js

$('#Hoster_30').trigger('click');
alert("Clicked");

jQuery is loaded and both alerts are shown, but the click event isn’t triggered. It works fine when I directly enter the trigger in the js console on the page and under Windows it also works in the add on.

Here my manifest.json

{
    "name": "MacAddon",
    "version": "0.1",
    "permissions": ["tabs", "http://*/", "https://*/"],
    "background": {
        "scripts": ["background.js"]
    },  
    "browser_action": {
        "default_title": "MacAddon"
    },
    "content_scripts": [
    {
      "matches": ["http://*.kinox.to/*", "http://*.streamcloud.eu/*"],
      "js": ["jquery.js"]
    }
    ]
}

Answer 1

For Chrome 19-, you have to inject the code and use the website’s own method to switch the Episode.

var s = document.createElement('script');
s.textContent = "getPlayerByMirror($('#Hoster_30'), 'Auto');";
s.onload = function() {
    this.parentNode.removeChild(this);
};
document.head.appendChild(s);

(To find out which function had to be called, I inspected the $().data('events') object in the console: $('#Hoster_30').data('events').click[0].handler).
In Chrome 20+, using .trigger('click') from the content script worked fine:

$('#Hoster_30').trigger('click');

Thanks Rob W. for welcoming me so greatly here and answering the Question!