1.     ""      .

2.    .  ""    " ". (  =>  =>  )

3.    .  "  (CSS)"   "  (CSS)". (  =>  =>   (CSS))

4.   ,     "".
    .    .

5.     =>  =>        .  "".

6.     =>  =>    :
   1)   jQuery: jquery-1.7.2.js
   2)      :  
   3)   <!DOCTYPE>: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

7.     =>   =>   ,        " ",             .  " "    "".