Strange variable received

Hi all, I'm trying to send some variables from a form to another page (first time since formatting) and I can't get them. When I pointed the form to phpinfo.php, I get every variable well, except for the button's name which I need for an IF statement. It's an image called "change_default" and the variables I receive are: _POST[change_default_x] 33 _POST[change_default_y] 17 so these are the width and height of my button's image, but I want to get the button's name as a variable... why is this? Thanks in advanced, ----------------------- Cesar Aracena lists@icaam.com.ar http://www.icaam.com.ar Cel: +54.299.635-6688 Tel/Fax: +54.299.477-4532 Cipolletti, Rio Negro R8324BEG Argentina --------------------------- Soluciones profesionales en Internet y Comunicaciones http://www.icaam.com.ar