var hdr = document.getElementById('hdr');
var ftr = document.getElementByID('ftr');
I want the 2nd line to visibly show me I mistyped getElementById . (I 'mistakenly' capitalized the last letter in the 2nd line. I typed "D" when it should be "d".) No text editor I have found can do this! Notepad++, Notepad2, Textpad, jEdit, Crimson Editor, even Dreamweaver code view - nothing catches syntax errors like that. Unless there's a plug-in or setting I am missing.