一旦jquery对话框关闭并重新打开，为什么Tinymce无法启动？

I have a jquery UI dialog box with tinymce inside of it, the first time I open the dialog box tinymce works fine but once I close the dialog box and reopen it I see the tinymce editor but I can't type anything inside as if it is disabled.I have a jquery UI dialog box with tinymce insi