Well you cant have both an action and a function wich do a window.location when submitting....
This will not work. simply rem the jumptour function and you should have the parm at Ejecutar-Equipo.php
<FORM NAME="frmMenu" onSubmit="jumptourl()" action="Ejecutar-Equipo.php" method="get" >
window.location = './index.php?m=' + frmMenu.Equipo'&s=0';
and for J-Ray, refering to W3C and HTML 4.0 specs:
Select option value = cdata [CS] This attribute specifies the initial value of the control.
CDATA is a sequence of characters from the document character set and may include character entities. User agents should interpret attribute values as follows:
Replace character entities with characters,
Ignore line feeds,
Replace each carriage return or tab with a single space.
So it can be almost anything :-)