submenu do not expand

I have used firebug to inspect the html file and i have seen that the DIV block with class attribute "floatck" only has 5 px height. If i manually increase that value, the submenu is shown but the point is this action is done automatically and i don't know why.

Thanks.

hi
please give me your url
CEd

s402800377.mialojamiento.es/isladeleon_joomla2_5_1/

an url without maximenu loaded in the page is useless...

I am sorry but it is possible that when you have checked the website i have changed the menu. Currently the menu is maximenu.

ok, so please test with the native template beez20. The gantry framework is very "agressive" for the other menus
There are some specific css that kill the correct behavior of Maximenu.
If you find the css that breaks this, I would be happy to write a little article on this.
CEd