Normal browser size after close Jquery Lightbox for IOS AND Android

Hi, I build a small webapplication (for smartphones). In a page there is a simple Lightbox with Jquery. My target is let only the lightbox [login to view URL] set parent page (browser) back to normal "zoom". That means that the page beneed Lightbox must be set on 100%. And not on the zoomm properties from Lightbox. In attachment you will find the code for this Lightbox. It works great on Android but not on IOS!! Who can help me trough Teamviewer and Skype? NOTE: I work on a 30" screen. So please be aware that you also work on a big screen. On a default laptop the code renders very (to) small and is unreadible. I can zommin on my screen but the code will be very blury. Thanks in advance. Herman.