You would have to remove couple more things from script.
open main.js file (uncompress it using jsbeautifier.org) and remove this script
jQuery(document).ready(function (e) {
var t = window.innerHeight + "px";
if (window.innerWidth < 980) {
jQuery("#top_most, #nav_wrapper").css({
height: t
});
jQuery("#top_most, #nav_wrapper ").css({
overflow: "auto"
})
} else {
jQuery("#top_most, #nav_wrapper").css({
overflow: "visible"
});
jQuery("#top_most, #nav_wrapper").css({
height: "auto"
})
}
jQuery(".media_left").click(function () {
jQuery("#header_navigation").animate({
width: "toggle"
})
});
jQuery(".media_left_close").click(function () {
jQuery("#header_navigation").animate({
width: "toggle"
})
});
jQuery(".media_right").click(function () {
jQuery("#nav_wrapper").animate({
width: "toggle"
})
});
jQuery(".media_right_close").click(function () {
jQuery("#nav_wrapper").animate({
width: "toggle"
})
})
});
jQuery(window).on("resize", function (e) {
if (window.innerWidth < 920) {
var t = window.innerHeight + "px";
jQuery("#top_most, #nav_wrapper").css({
overflow: "auto"
});
jQuery("#top_most, #nav_wrapper").css({
height: t
});
jQuery("#title_wrapper").css({
"margin-top": "40px"
})
} else {
jQuery("#top_most, #nav_wrapper").css({
overflow: "visible"
});
jQuery("#top_most, #nav_wrapper").css({
height: "auto"
});
jQuery("#title_wrapper").css({
"margin-top": "10px"
})
}
})