For code mirror divs refer to the manual, these sections might be useful to you:
http://codemirror.net/demo/fullscreen.html
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
lineNumbers: true,
theme: "night",
extraKeys: {
"F11": function(cm) {
cm.setOption("fullScreen", !cm.getOption("fullScreen"));
},
"Esc": function(cm) {
if (cm.getOption("fullScreen")) cm.setOption("fullScreen", false);
}
}
});
And also take a look at:
http://codemirror.net/demo/resize.html
Also a comment:
Inline styling is horrible you should avoid this at all costs, not only will it confuse you, it's poor practice.