// Check username and password
function checkifvalid(){

if (window.document.myform.username.value=="")
{
alert("Please enter your Email Adddress!");
window.document.myform.username.focus();
return false;
}

// SPW Check of valid email is entered
if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(window.document.myform.username.value)))
{
alert("Please enter a VALID Email Address!\n\nYour EMAIL is your USERNAME!");
window.document.myform.username.focus();
return false;
}

if (window.document.myform.lpassword.value=="")
{
alert("Please enter your password!");
window.document.myform.lpassword.focus();
return false;
}

return true;
}