i make plugin for site for jquery i am use google jquery for that i am using the code
/*add_action( 'init', array( $this, 'include_jquery' ) );
function include_jquery(){
wp_deregister_script('jquery');
wp_register_script('jquery', ("http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"));
wp_enqueue_script('jquery');
}*/
but it conflict width my header file jquery so wat i do to solved it