var word = document.getElementById('word');
        var userPWD = document.getElementById("userPWD");
        var msg = document.getElementById("msg");
        var showResult = document.getElementById("showResult");
        var userName = document.getElementById("userName");
        var delMsg = document.getElementById("delMsg");
        
        word.addEventListener('click',  function() {
           document.getElementsByTagName('p')[3].style.cssText= "color: blue; font-size: 25px";
        }, false);
      
        userPWD.addEventListener('blur', checkNum, false);
        function checkNum() {
            if (this.value.length !=8)
                msg.textContent='Unsuccessful! Password is limited to 8 characters.';
            else
                showResult.addEventListener('click',  function(e) {
                e.preventDefault();
                window.alert(userName.value + '\n' + userPWD.value);
            }, false); 
        };

        delMsg.addEventListener('click', delMessage, false);
        function delMessage() {
                msg.textContent='';
        };