Trigger Keyboard Event Combination Shift+Q

I am very confuse and not sure either javascript or jquery can trigger keyboard event like Shift+Q or Alt+Q from button click. I already looking on this forum and also download some of js file like key-event.js and crossBrowser_initKeyboardEvent.js but I still cannot get a result what I want.

My situation is I need to trigger ALT+q key from button html. This should be automatically proceed and will be effect not only inside html(browser) but also on desktop client.

Thanks you.