enable javascript and other HTML element in wordpress MU. open wp-includes/kses.php find following line
$allowedposttags = array(
add following codes
'script' => array( 'type' => array(), 'src' => array(), 'language' => array() ), 'noscript' => array( ), 'object' => array( 'height' => array(), 'width' => array(), 'type' => array(), 'data' => array(), 'allowfullscreen' => array(), 'id' => array() ), 'param' => array( 'name' => array(), 'value' => array() ), 'embed' => array( 'width' => array(), 'height' => array(), 'type' => array(), 'src' => array(), 'allowfullscreen' => array() ), 'coolcode' => array( 'lang' => array() ), //over
