I have the following script in which I am validating a CC# but it always 
pops up the prompt even if the first digit is 4, can someone see my 
error?

 var type = target.card_type[target.card_type.selectedIndex].value;
 var number = target.card_number.value;
 var first_number = number.substring(0,1);
 if ( type == 'VISA' && first_number != 4){
 alert("Invalid Card Number");
 return false();
 }



<CF_SIGNATURE
    NAME="Douglas L. Brown"
    EMAIL="[EMAIL PROTECTED]"
    PHONE="714.538.6611"
    WEB="http://www.carnivorepc.com";>

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