Untitled

<!DOCTYPE html>
<html>
<head>
<script>
<?php

function Validation()
      {
	var x = document.forms["welcome.php"]["name"].value;
    if (x==null || x=="") {
        alert("Please Enter a User Name!!!");
        return false;
	}

	var y = document.forms["welcome.php"]["email"].value;
    var atpos = y.indexOf("@");
    var dotpos = y.lastIndexOf(".");
    if (atpos<1 || dotpos<atpos+2 || dotpos+2>=y.length) {
        alert("Not a Valid E-mail Address!!!");
        return false;
      }
	var z = document.forms["welcome.php"]["password"].value;
    if (z==null || z=="") {
        alert("Please Enter a Password!!!");
        return false;
    }
	  }
</script>
</head>
<body>
<form action="welcome.php" onsubmit= "return Validation()"  method="post">
Name: <input type="text" name="name"><br>
E-mail: <input type="text" name="email"><br>
Password:<input type="text" name="password"><br>
<input type="submit" value="submit">

?>

</form>
</body>

</html>