Io ho questo codice, non riesco a capire perchè non si allinea a centro dello schermo come vorrei io ... ??? Ciao, Grejo.codice:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Gestione Report</title> <script language="JavaScript"> function validazione(){ with(document.modulo_login) { if(NN.value=="") { alert("ATTENZIONE! Inserire l'username"); NN.focus(); return false; } if(PW.value=="") { alert("ATTENZIONE! Inserire la password"); PW.focus(); return false; } } return true; } </script> </head> <body bgcolor="rgb(223,233,244)"> <table border="1" width="100%" height="100%"><tr><td align="center" valign="middle"> <table border=0> <form name="modulo_login" onSubmit="return validazione();" method="post" action="Gestione.php"> <tr> <td align="left">Username: </td><td align="right"><input type="text" name="NN" size="15" maxlength="100"></td> </tr> <tr> <td align="left">Password: </td><td align="right"><input type="password" name="PW" size="15" maxlength="100"></td> </tr> <tr> <td colspan="2" align="right"><input type="submit" name="GO" value="Login"></td> </tr> </form> </table> </td></tr></table> </body> </html>