prompt.js

  var Prompt = function(prompt){
	var box = document.createElement('textarea');
	box.placeholder = prompt;
	box.style.width = "30vw";
	box.style.height = "60vh";
	box.style.marginTop = "20vh";
	box.style.marginLeft = "35vw";
	box.style.position = "fixed";
	box.style.left = "0";
	box.style.top = "0";
	box.style.zIndex = "9999999";
	box.oninput = function(){
           box.parentNode.removeChild(box);
           changed = true;
	};
	document.body.appendChild(box);
        return box;
  }