why getElementById dosn't work with <script>Ÿ?? tag but work with php echo '<script=?iso-8859-1?Q?=3E?=

why getElementById dosn't work with <script>Ÿ?? tag but work with php echo
'<script>

References

Reference NO 1

http://bohuco.net/blog/tag/javascript/

Reference NO 2

http://forumarray.com/write-javascript-on-the-tpl-file-and-call-php-script-371401

Reference NO 3

http://webdesignerwall.com/tutorials/20-wordpress-recipes-codes

Reference NO 4

http://clarkgrubb.com/html-css-javascript

Reference NO 5

http://armfield-janu1991.blogspot.com/2013/08/typeerror-cannot-find-function-gethours.html

Reference NO 6

http://www.scribd.com/doc/38448895/Wordpress-Cheats

Reference NO 7

http://bonny95.wordpress.com/author/bonny95/page/9/

Reference NO 8

http://arrindel-janu1991.blogspot.com/2013/08/update-multiple-rows-php-with-checkbox.html