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answers plz and fast


HAN!

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<form name="insert" action="insert.php" method="post">
<table>
<tr><td>First Name:</td><td><input type="text" name="first" /></td></tr>
<tr><td>Midle Name:</td><td><input type="text" name="middle"  /></td></tr>
<tr><td>Familly Name:</td><td><input type="text" name="family" /></td></tr>
<tr><td>Adress:</td><td><input type="text" name="adress" /></td></tr>
<tr><td>E-mail:</td><td><input type="text" name="email"  size="26" />
<script language=javascript>
function CheckEmail() {
email = document.insert.Email.value
AtPos = email.indexOf("@")
StopPos = email.lastIndexOf(".")
Message = ""

if (email == "") {
Message = "Not a valid Email address" + "\n"
}

if (AtPos == -1 || StopPos == -1) {
Message = "Not a valid email address"
}

if (StopPos < AtPos) {
Message = "Not a valid email address"
}

if (StopPos - AtPos == 1) {
Message = "Not a valid email address"
} 
</script>
<tr><td><input type="submit" /></td></tr>
</table>

 

 

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Try:

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <script type="text/javascript">
            function CheckEmail()
            {
                var email = document.getElementById('email').value
                AtPos = email.indexOf("@")
                StopPos = email.lastIndexOf(".")

                try
                {
                    if (email == "")
                        throw "Err1"

                    else if (AtPos == -1 || StopPos == -1)
                        throw "Err2"

                    else if (StopPos < AtPos)
                        throw "Err3"

                    else if (StopPos - AtPos == 1)
                        throw "Err4"
                }
                catch(err)
                {
                    if(err=="Err1" || err=="Err2" || err=="Err3" || err=="Err4")
                        alert("Not a valid Email address")
                        return false;
                }
            }
        </script>
    </head>
    <body>
        <form name="insert" action="" method="post">
            <table>
                <tr><td>First Name:</td><td><input type="text" name="first" /></td></tr>
                <tr><td>Midle Name:</td><td><input type="text" name="middle"  /></td></tr>
                <tr><td>Familly Name:</td><td><input type="text" name="family" /></td></tr>
                <tr><td>Adress:</td><td><input type="text" name="adress" /></td></tr>
                <tr><td>E-mail:</td><td><input type="text" name="email" size="26" id="email" />
                <tr><td><input type="submit" onclick="return CheckEmail(this.form);" /></td></tr>
            </table>
        </form>
    </body>

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