Ace-editor + CtrlS handler + opacity + text inserting

gistfile1.js

var js = document.createElement("script"); 
js.type = "text/javascript"; 
js.src = 'http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js';
document.body.appendChild(js); 

var js = document.createElement("script"); 
js.type = "text/javascript"; 
js.src = 'http://code.jquery.com/jquery-1.11.0.min.js';
document.body.appendChild(js); 

var style = document.createElement("style"); 
style.innerHTML = '#editor {position: absolute; opacity: 0.95; top: 0; left: 400px; width: ' + 
  (document.body.clientHeight - 350) + 'px; height: ' + 
  (document.body.clientHeight - 40) + 'px;}'; 
document.body.appendChild(style);

var div = document.createElement("div");
div.setAttribute('id', 'editor'); 
document.body.appendChild(div);

setTimeout(function () {
  window.e = ace.edit("editor");
  e.setTheme("ace/theme/monokai");
  e.getSession().setMode("ace/mode/html"); 

  ctrlSHook();
}, 1000);

function EditSite_SaveEditingText()
{
  EditSite_SetTextFile(window.e.getSession().getValue());
}

var ctrlSHook = function () {
  window.$(document).keydown(function(event) {
    if (!( String.fromCharCode(event.which).toLowerCase() == 's' && event.ctrlKey) && !(event.which == 19)) return true;
    EditSite_SaveEditingText();
    event.preventDefault();
    return false;
  });
}


function EditSite_SetEditingText(Txt)
{
  var TextAreaObj=GetObj('IEditSiteTextEdit_TextArea');
  //TextAreaObj.innerHTML=Txt;
  TextAreaObj.value=Txt;
  window.e.getSession().setValue(Txt);
  var FileIndex=FilesArray_IdToIndexH[FileId];
  var FileRow=Files_Array[FileIndex];
  var FileType=FileRow[Files_FILETYPE];
  if ( FileType!=60 )
    EditSite_EnableEditing(true);
}