Untitled

<html>
<head>
<title>Form Validation</title>
<Script type="text/javascript">
function validate()
{
var flag=true;
var username=document.getElementById("uname").value;

if(username=null || username.length<6)
{
return_value=false;
alert("your username should be of atleast of 6 characters!");
document.getElementById("uname").value="  ";
}
var pwd=document.getElementById("pwd").value;
var pwd1=document.getElementById("pwd1").value;
if(pwd=null || pwd1.length<6)
{
flage=false;
alert("your password should contain atleast of 6 characters!");
document.getElementById("pwd").value="  ";
document.getElementById("pwd1").value="  ";
}
if(pwd != pwd1)
{
flag=false;
alert("your password didnot match");
document.getElementById("pwd").value="  ";
document.getElementById("pwd1").value="  ";
}
var ph=document.getElementById("pn").value;
if(isNaN(ph))
{
flag="false";
alert("only numbers in phone");
document.getElementById("pn").value="  ";
}
if(flag=="false");
return false;
}
</script>
</head>
<body bgcolor="silver">
<form name="regform" action="THANKS.html" align="center" onsubmit="return validate()">
NAME:&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp<input type="text field" name="name"></input type></br></br>
USERNAME:<input type="text field" name="uname"></input type></br></br>
PASSWORD:<input type="password" name="pwd"></input type><br/><br/>
PASSWORD1:<input type="password" name="pwd1"></input type><br/><br/>
E-MAIL ID: &nbsp    <input type="text field" name="emi"></input type></br></br>
PHONE NO:<input type="text field" name="pn"></input type></br></br>
Date Of Birth:DD<input type="text" size=2>MM<input type="text" size=2>YY<input type="text" size=3></br></br>
MALE<input type="radio"></input type>
FEMALE<input type="radio"></input type></br></br>
ENGLISH<input type="checkbox"></input type>
HINDI<input type="checkbox"></input type>
TELUGU<input type="checkbox"></input type>
TAMIL<input type="checkbox"></input type></br></br>
<p>ADDRESS:</p><textarea name="address"></textarea></p></br></br>
<button type="submit">Submit</button>
<button type="reset">Reset</button>
</form>
</body>

</html>