[Owncloud] How to add JavaScript file to the guest login page

[Visitha Baddegama]

Hi All,

How can I add a JavaScript file to the guest login page of ownCloud?
Can any one point me out the exact location where I should append that
JS file then it will be appear at the head tag of guest login page.

Thanks in Advance.!

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Visitha Warna Baddegama
Undergraduate
Department of Computer Science and Engineering
University of Moratuwa
Sri Lanka