BUG: error "INVALID_CHARACTER_ERR" in IE9 when the key of "setAttribute" starts with a number

[Сергей Шмаков]

If the key starts with a number, in IE9 there is an error "INVALID_CHARACTER_ERR".

Because the name of the attribute in IE9 can not start with a digit.

The error occurs in the line: "div.setAttribute (key, parsed);"

We decided this bug by adding to the start of the key string-character.