Dynamic Ajax content

http://www.dynamicdrive.com/dynamici...jaxcontent.htm

How can i load the Tiny MCE WYSIWYG script into a page loaded by dynamic ajax content ?
I tried oadobjs('jscript/tiny_mce/tiny_mce.js'); after ajaxpage() fonction but the problem seems to be with the tinyMCE.init() fonction because i can't load this part as a .js object, cause i choose the "theme" as this
PHP Code:
if ($type_tiny==2)
        echo 
"theme : 'default', mode : 'textareas' });";
if (
$type_tiny==3)
echo 
"theme : 'simple', mode : 'textareas' });";
echo 
"</script>"
That's why the editor can't be loaded on the textareas of the new page ...

Any solution ?