You havent uploaded your files with a valid doctype...do that now.
Also, your commenting is incorrect, which may be causing you quite a bit of trouble.
Here is a correct comment:
Notice there's only 2 dashed on either side of the comment text.
<!--Correct Comment -->
Try adding this doctype in place of just the <html> at the top of your page code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">