how to menu hiding? [SOLVED]

If you want to hide a page from the navigation menu:

(1) In v1.5.0 or later...
On the 'Pages' tab, drag and drop the page onto the 'Hidden pages' text.

(2) In versions prior to v1.5.0...
Edit the page and deselect the 'Show in Nav' checkbox.

You need to have one page/link visible in your menu as your home page.

If you want to hide the entire navigation menu, then you will need to do this using CSS.
Add the following CSS to your theme's 'custom.css' file.
For example, if you are using the Kosel theme, then the file will be located here: 'showkase/_themes/kosel/css/custom.css'.

nav#nav {
    visibility: hidden;
}

More information about Adding Custom Styles (using CSS to affect the style of the Showkase site) can be found here.

If you are not already using the latest version of Showkase and wish to upgrade, then instructions can be found here.

If you'd like to hide your home page from the navigation menu under the Maribo theme, then add the following CSS to your 'showkase/_themes/maribo/css/custom.css' file.

/* Show/hide home page in nav */
nav > ul:first-child > li:first-child {
    display: none;
}

(If you view the source of the Maribo demo's web page, you'll see this code being used.)