mirkoczat live w tle

var iframe = document.createElement( 'iframe' );
var input = document.createElement( 'input' );
input.type = "text"; input.placeholder = "podaj kod filmiku czyli to co jest w linku po 'watch?v=' "; input.style.width = "60%";
var input_ok = document.createElement( 'button' );
input_ok.innerHTML = "gotowe"; input_ok.style.color = "black";

document.body.prepend( input_ok ); document.body.prepend( input );
input_ok.onclick = function(){
	document.body.removeChild( input ); document.body.removeChild( input_ok );
	iframe.src = "https://www.youtube.com/embed/" + input.value;
	var space = document.body.getElementsByTagName( 'div' );
	space[1].className = "";
	var mid = document.getElementsByClassName( "col-sm-10 col-md-8 mid midfull" );
	mid[0].style.zIndex = "1"; mid[0].style.backgroundColor = "rgba(0,0,0,0.5)";
	document.body.prepend( iframe );
	iframe.style.position = "absolute"; iframe.style.zIndex = "99"; iframe.style.width = "98%"; iframe.style.height = "85%"; iframe.style.top = "15%";
	var buttons = document.createElement( 'div' );
	var button = document.createElement( 'button' );
	button.innerHTML = "H I D E";
	buttons.style.position = "absolute"; buttons.style.top = "3%"; buttons.style.zIndex = "99999"; button.style.color = "black";
	var chatButton = document.createElement( 'button' );
	chatButton.style.color = "black"; chatButton.innerHTML = "color";
	document.body.prepend( buttons );
	buttons.appendChild( button );
	buttons.appendChild( chatButton );
	button.onclick = function(){
		if(iframe.style.position == "absolute"){
			iframe.style.position = "fixed"; iframe.style.zIndex = "-1"; button.innerHTML = "S H O W";
		} else {
			iframe.style.position = "absolute"; iframe.style.zIndex = "99"; button.innerHTML = "H I D E";
		};
	};
	var chat = document.getElementsByClassName( "chat" );
	chatButton.onclick = function(){
		if(chatButton.style.color == "red"){
			chat[0].style.textShadow = "1px 2px blue";
			chatButton.style.color = "blue";
		} else if(chatButton.style.color == "blue"){
			chat[0].style.textShadow = "1px 2px green";
			chatButton.style.color = "green";
		} else if(chatButton.style.color == "green"){
			chat[0].style.textShadow = "";
			chatButton.style.color = "black";
		} else {
			chat[0].style.textShadow = "1px 2px red";
			chatButton.style.color = "red";
		};
	};
};