var html = "";


document.body.insertAdjacentHTML('beforeend', html);
let chatframe = document.getElementById('shop4DChat');
chatframe.onload = function(){
    chatframe.style.height = (chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetHeight + chatframe.contentWindow.document.getElementsByClassName('open_customer_chat')[0].offsetHeight) + 'px';
    //chatframe.style.width = (chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetWidth > 0 ? chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetWidth : chatframe.contentWindow.document.getElementsByClassName('open_customer_chat')[0].offsetWidth + 1) + 'px';
    chatframe.contentWindow.document.body.onclick = function() {
        chatframe.style.height = (chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetHeight + chatframe.contentWindow.document.getElementsByClassName('open_customer_chat')[0].offsetHeight) + 'px';
        chatframe.style.width = (chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetWidth > 0 ? chatframe.contentWindow.document.getElementsByClassName('chat_box')[0].offsetWidth : chatframe.contentWindow.document.getElementsByClassName('open_customer_chat')[0].offsetWidth + 1) + 'px';
    }
}