i am currently preparing my web and would like to know how i can "disable" the button of a page in the top menu (like home, contact product lines), if i am adding sub-pages and would like the visitor to be able to click on sub-pages only? FYI - i dont wanna hide it, just let it be "unclickable" by the visitor, so he could go only to sub-pages. Please see screenshot attached.

thanks in advance

alex