Ckeditor dont load again with load() !!!!

i have some problem with ckedior

ex : i have 2 pages , page1 about info , page2 about update info, ckeditor show in page2 , i want when click button page1 , page2 will load ...

My code jquery :
Page1

$('buttonupdate').click(function(){
$('page1').load('page2').
});

Page2

$('buttonback').click(function(){
$('page2').load('page1').
});

At first time , ckeditor show ok , but second time and more , ckeditor dont show again , but texarea still invisible . How fix it