Hello again,
I figured out an alternative way:
$("div[id^='gridmenu']").css('min-width','210px');
$("div[id^='gridmenu']").css('min-height','265px');
$("div[id^='gridmenu']").css('font-family','Calibri, Candara, Segoe, "Segoe UI", Optima, Arial, sans-serif');
$("div[id^='gridmenu']").css('font-size','10px');
$("div[id^='menuItem99']").css('font-family','Calibri, Candara, Segoe, "Segoe UI", Optima, Arial, sans-serif');
$("div[id^='menuItem99']").css('font-size','10px');
This will allow changes on the filter menu at runtime.
Thanks,
Gaetano