Add new reviews slider (html wrapper + buttons, right/left button click handler, recalculate buttons position after each slide); remove chat window, when it appears

gistfile1.js

// Add new reviews slider:
// html wrapper + buttons, 
// right/left button click handler, 
// recalculate banner`s buttons position after each slide

$('<div class="reviews-title">').css({
    'padding': '0 25px 10px'
}).append($happy_clients.icon, $happy_clients.text).insertBefore($new_reviews_wrapper);
$new_reviews_wrapper.find('div.all_reviews').css({
    'width': reviews.length * review_width,
    'display': 'block',
    'position': 'relative',
    'left': '0'
});
$new_reviews_wrapper.find('div.left, div.right').css({
    'position': 'absolute',
    'top': '70px',
    'width': '20px',
    'height': '30px',
    'background-size': '20px 30px',
    'cursor': 'pointer'
});
$new_reviews_wrapper.find('div.right').css({
    'background-image': 'url(data:image/png;base64,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)',
    'left': 0
});
$new_reviews_wrapper.find('div.left').css({
    'background-image': 'url(data:image/png;base64,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)',
    'right': 0
});
$new_reviews_wrapper.find('div.review-item').css({
    'padding': '0 30px',
    'margin': '0',
    'width': review_width,
    'float': 'left',
    'box-sizing': 'border-box'
});
$new_reviews_wrapper.find('div.review-item-image').css({
    'float': 'left'
});
$new_reviews_wrapper.find('div.review-item-text').css({
    'margin-left': '130px'
});
$new_reviews_wrapper.find('div.review-item-author').css({
    'text-align': 'right',
    'padding-top': '20px',
    'color': '#999',
    'font-style': 'italic'
});
$new_reviews_wrapper.find('div.right').click(function(event) {
    event.stopPropagation();

    if ($new_reviews_wrapper.find('div.all_reviews').position().left < 0) {
        $new_reviews_wrapper.find('div.all_reviews').animate({
                'left': '+=' + review_width
            },
            400,
            function() {
                var current = -$new_reviews_wrapper.find('div.all_reviews').position().left / review_width;
                $new_reviews_wrapper.css('height', $new_reviews_wrapper.find('div.review-item').filter('[data-num="' + current + '"]').height());
                recalculate();
            });
    }
});
$new_reviews_wrapper.find('div.left').click(function(event) {
    event.stopPropagation();

    if ($new_reviews_wrapper.find('div.all_reviews').position().left > -reviews.length * review_width) {
        $new_reviews_wrapper.find('div.all_reviews').animate({
                'left': '-=' + review_width
            },
            400,
            function() {
                var current = -$new_reviews_wrapper.find('div.all_reviews').position().left / review_width;
                $new_reviews_wrapper.css('height', $new_reviews_wrapper.find('div.review-item').filter('[data-num="' + current + '"]').height());
                recalculate();
            });
    }
});
$('#ctl00_ContentPlaceHolder1_Table1').css({
    'display': 'none'
});

// banner slider action
// recalculate buttons position
var $banner_left = $('[src="../images/buttons/slide_arrow_left.png"]'),
    $banner_right = $('[src="../images/buttons/slide_arrow_right.png"]');

var recalculate = function() {
    var banner = {
        left: $banner_wrapper.offset().left,
        top: $banner_wrapper.offset().top,
        height: $banner_wrapper.outerHeight(),
        width: $banner_wrapper.outerWidth()
    };

    $banner_left.css({
        top: banner.top + banner.height / 2 - $banner_left.outerHeight() / 2,
        left: banner.left + $banner_left.outerWidth()
    });
    $banner_right.css({
        top: banner.top + banner.height / 2 - $banner_right.outerHeight() / 2,
        left: banner.left + banner.width - $banner_right.outerWidth() - 20
    });
};
recalculate();

$banner_wrapper.add($banner_left).add($banner_right).css({
    opacity: '0.1'
});
$banner_wrapper.mouseenter(function(event) {
    $(this).css('opacity', 1);
}).mouseleave(function(event) {
    $(this).css('opacity', 0.1);
});
$banner_left.add($banner_right).mouseenter(function(event) {
    $banner_wrapper.css('opacity', 1);
});

//remove chat window, when it appears 
window.chat_interval = setInterval(function(){
    if($('#bt_invite_box').length > 0) {
        $('#bt_invite_box').remove();
        clearInterval(window.chat_interval);
    }
}, 50);