text: var myHeading = document.querySelector('h1');
  //myHeading.innerHTML='Hello World!';
  var myImage = document.querySelector('img');
  
  myImage.onclick = function(){
  	var mySrc = myImage.getAttribute('src');
  	if (mySrc === 'images/firefox-icon.png'){
  		myImage.setAttribute('src','images/wallet.png');
  	}else{
  		myImage.setAttribute('src','images/firefox-icon.png');
  	}
  }
  
  var myButton = document.querySelector('button');
  function setUserName(){
  	var myName = prompt('Please enter your name.');
  	localStorage.setItem('name',myName);
  	myHeading.innerHTML="Mozila is cool"+ myName;
  }
  if(!localStorage.getItem('name')){
  	setUserName();
  }else{
  	var storedName = localStorage.getItem('name');
  	myHeading.innerHTML = 'Mozlia is cool'+storedName;
  }
  
  myButton.onclick = function(){
  	setUserName();
  }
  
  