Fine adjustments in Wordpress + Javascript

I'm having some problems at Worpress. I will list the problems below, who can solve these problems please contact me. 1 - Homepage - Banner images are coming from a JS, but it needs to come from custom fields already created. 2 - When I click on Cases .... and I click on some of the Cases listed to see the details ..... if I click on return in the browser the page will not return. It must be because of the problems that JS has generated. 3 - Install the instagram plugin, so that the layout holds the same. 4 - Adjust the contact form. To access the site at Worpress [login to view URL] To access the site at HTML ( Everything is working here) [login to view URL]