a tagınıza bir class verip js dosyanıza aşağıdaki kodları ekleyin.

$('a tagındaki class').click( function(e) {
e.preventDefault();
document.fullScreenElement && null !== document.fullScreenElement || !document.mozFullScreen && !document.webkitIsFullScreen ? document.documentElement.requestFullScreen ? document.documentElement.requestFullScreen() : document.documentElement.mozRequestFullScreen ? document.documentElement.mozRequestFullScreen() : document.documentElement.webkitRequestFullScreen && document.documentElement.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT) : document.cancelFullScreen ? document.cancelFullScreen() : document.mozCancelFullScreen ? document.mozCancelFullScreen() : document.webkitCancelFullScreen && document.webkitCancelFullScreen();
return false;
} );