I need to add thickbox to the existing button so as to open a popup in the same window. I need to use the native thickbox of Wordpress since that is responsive e.g., plugin detail thickbox, image edit thickbox etc all are responsive. I donot want to use plugins rather i want to do it inside the wordpress or theme. Earlier, I used to create it with the code given here http://shibashake.com/wordpress-theme/create-pop-up-windows-in-your-wordpress-blog-with-thickbox
but i ended up with a popup that is not responsive. i am stuck up at this point since one week would be glad if you help.