function add_chat(){
		document.write('<div id="chat_box" style="background-color:#fff;border:2px solid #EEA44B;border-bottom:none;border-radius:20px 20px 0px 0px;width:100%;max-width:300px;position:fixed;bottom:-368px;right:10px;overflow:hidden;transition:0.3s" onClick="toggle_chat_window();"><div id="chat_btn" style="background-color: #EEA44B;color:#fff;font-size:16px;font-weight:bold;width:100%;position:absolute;left:0px;top:0px;height:40px;line-height:40px;text-align:center">NEED HELP? CHAT WITH US</div><iframe id="chat_frame" src="https://coffeepot.expressivetek.com/new/ezconnex/oschat" width="100%" height="400" frameborder="none"></iframe></div>');
	}
	add_chat();

	function toggle_chat_window(){
		var cwindow = document.getElementById('chat_box');
		if(cwindow.style.bottom == '0px'){
			document.getElementById('chat_box').style.bottom = '-368px';
			document.getElementById('chat_btn').style.display = 'block';
		} else {
			document.getElementById('chat_box').style.bottom = '0px';
			document.getElementById('chat_btn').style.display = 'none';
		}		
	}	
	window.addEventListener("message", (event) => {
		
  		if (event.origin !== "https://coffeepot.expressivetek.com")
    	return;		
  		toggle_chat_window();

	}, false);