My own site running DW Page doesn't show portfolio extended texts

Hello, I’ve bought your DW Page theme for WordPress but when I’m running it on my own site, http://elegalis.cz/#blog on the desktop PC modals show allright, but on mobile phone (Android, Chrome) i can’t get them running like on your DEMO. Simply nothin happens. No slide and even no modal.
 
Would you please be so kind and let me know, hot to fix that? I’m I just missing some JavaScript or what am I doing wrong?
 
Thank you so much,
Tomáš Bláha