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Possible Duplicate:
Validate email address in Javascript?

Possible Duplicate:
Validate email address in Javascript?

Possible Duplicate:
Validate email address in Javascript?

?>
 <script type="text/javascript">
 function ValidateEmail(inputText) 
{ 
var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/; 
if(inputText.value.match(mailformat)) 
{ 
document.forms.emailform(); 
return true; 
} 
else 
{ 
alert("You have entered an invalid email address!"); 
document.forms.emailform(); 
return false; 
} 
} 
</script>
<?php
 $addemail .= '
 
 <form method="post" action="cart2.php" name="emailform" onsubmit="return validateEmail">
 ';
 $addemail .= '
 E-mail Address: <input type="text" name="email" value="'.$row6['email'].'" size="19" /><input type="hidden" name="cartid" value="'.$cart.'" />';
 if ( $emailerror != '' )
 {
 $addemail .= '<img src="images/email_error.png" width="16" height="16" hspace="4" alt="E-mail Error" />';
 }
 $addemail .= '
 <input type="image" name="Add E-mail Address" alt="Add E-mail Address" src="images/addemail.gif" style="vertical-align:middle" />
 </form>
 ';
 if ( $row6['email'] == '' )
 {
 $emailpresent = 0;
 }
 else
 {
 $emailpresent = 1;
 }
}
 $addemail .= '
 </td>
 </tr>
 ';
}

<script type="text/javascript">
 function ValidateEmail(inputText) 
{ 
var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/; 
if(inputText.value.match(mailformat)) 
{ 
document.forms.emailform(); 
return true; 
} 
else 
{ 
alert("You have entered an invalid email address!"); 
document.forms.emailform(); 
return false; 
} 
} 

<?php
 $addemail .= '
 
 <form method="post" action="cart2.php" name="emailform" onsubmit="return validateEmail">
 ';
 $addemail .= '
 E-mail Address: <input type="text" name="email" value="'.$row6['email'].'" size="19" /><input type="hidden" name="cartid" value="'.$cart.'" />';
 if ( $emailerror != '' )
 {
 $addemail .= '<img src="images/email_error.png" width="16" height="16" hspace="4" alt="E-mail Error" />';
 }
 $addemail .= '
 <input type="image" name="Add E-mail Address" alt="Add E-mail Address" src="images/addemail.gif" style="vertical-align:middle" />
 </form>
 ';
 if ( $row6['email'] == '' )
 {
 $emailpresent = 0;
 }
 else
 {
 $emailpresent = 1;
 }
}
 $addemail .= '
 </td>
 </tr>
 ';
}
?>