Untitled

<script>
function validation(){
var x=document.getElementById("uname").value;
var y=document.getElementById("pass").value;
if (x== null && y==null)
{
alert (" Enter name and password ");
}
else if(x==null||x==" ") { alert (" You must enter your username ");
 return false;}
else(y==null||y==" ") { alert ("You must enter your password ");
return false;} }
</script>

<body>
<form name= "myform" action="login.php" onsubmit="return validation()" method="post">
Username: <input type="text" name="uname"><br> <br>
Password: <input type="password" name="pass">
 <br><br>
<input type="submit" value=" Login"></form>
<button type="button" onclick="location.href='SignUp.php';">Sign Up</button>
 </body> </html>