i have some buttons like this:

<INPUT TYPE="image" name="update" value="update" SRC="images/update_button.gif" width="92" height="25" BORDER="0" ALT="Update">

when they are passed firefox displays "update=update&update.x=22"
but ie only shows "update.x=22"

so in order to know which button was pressed i need to look for the variable update.x or empty.x or checkout.x

but thenever i try
PHP Code:
if($_GET['empty.x']){

it is not seeing the variable empty.x even tho i can look right in the broswer url and see that it is there....so i am thinking there must be a different way to capture that variable...does anyone know how?

THANKS.