Change code ckeditor.js for keeping space between textarea tag.

Hi All,

I am using ckeditor 3.6.2 version,now my requirement is i want to add a one space  between textarea tag while click on the source.

Example:

Step1: I am opening the ck editor

step2: Toggle  to Source

Step3 : Enter the code like <textarea/> and again toggle to Source here code which is ck editor converted like <textarea></textarea> ,Now Here I want to change <textarea>  </textarea>.

Some more Examples:

<textaarea style="display:none"/>  to <textarea style="display:none">  </textarea>

Thanks in Advance