Hi

I am trying to get a form validation to allow all letters of the alphabet and all numbers but only a few symbols, (_)underscore and minus(-), how do I prevent other characters getting through? Here is my code so far:

This works and disallows the characters stated but if I enter a number into the $var it fails, and this isn't what I want.

Hope you can help
Thanks
Sami

here, i have attached few client site validation, hope it will help you do the validation.
function AlphaOnly(){
    if ((event.keyCode >= 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97) || (event.keyCode ==124) || (event.keyCode ==126) ||(event.keyCode > 47 && event.keyCode < 58) )
    event.returnValue = false;
}

function Alpha_Space(){
   if ((event.keyCode > 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97) || (event.keyCode ==124) || (event.keyCode ==126) ||(event.keyCode > 47 && event.keyCode < 58) )
   event.returnValue = false;
}

function NumericOnly(){
   if (event.keyCode < 45 || event.keyCode > 57)
   event.returnValue = false;
}

function PositiveIntOnly(){
   if (event.keyCode < 48 || event.keyCode > 57)
   event.returnValue = false;
}

function UserName(){//--Alpha + Numeric, _ -
   if (event.keyCode < 45 || (event.keyCode > 45 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 95) || (event.keyCode > 95 && event.keyCode < 97) || (event.keyCode > 122))
   event.returnValue = false;
}

function AlphaNumeric(){
   if ((event.keyCode >= 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97) || (event.keyCode ==124) || (event.keyCode ==126))
   event.returnValue = false;
}

function Phone(){
   if ((event.keyCode > 32 && event.keyCode < 40)|| (event.keyCode > 41 && event.keyCode < 43)|| (event.keyCode > 43 && event.keyCode < 45) || (event.keyCode > 45 && event.keyCode < 47)||(event.keyCode > 57 && event.keyCode < 95)||(event.keyCode > 96))
   event.returnValue = false;
}

surendran
(Anything is Possible)
http://ssuren.spaces.msn.com