CKEditor not loading

I have the following problem

I have a page with a content div where pages are loaded in via AJAX and menu items called STEP 1 , STEP 2 etc

NOw everytime I click on a step a new page is being loaded in the content div. One of the pages contains CKEditor

When clicking on the link that contains CKEditor, CKEditor loads perfectly, when I click on the link again, the spcae where CKEditor is is blank, not loading, so I need to hard refresh the page and click on the link again, then ck editor is displaying again. Any advice will be highly apprciated

The following solved my problem

if (CKEDITOR.instances['editor1']) {

  CKEDITOR.instances['editor1'].destroy();

}