Add or Modified Liquid coding

Hi there, I need to change a bit how menus act. I will try to be clear on what I need by explaining what is wrong now and what I want in the Future. When I click once on a menu, the sub-categories menus come down and you can choose from there to go on whatever sub-cat menu you want to go till here it's all good, but if I double click on the main menu, it makes sub-categories go up and close the menu and nothing happen, so my customer can think there is a bug... First Job : I want to code menu to do this : If I click once nothing change, but if I double click, I still want my sub-categories menus to appear at the top (to still be able to choose from them) but also all items contained in all sub-categories (For people who can't make their mind :)). Second Job : Probably related to the first one. If I am looking at one item and I want to switch to see something else on a menu here is what happen : I click on a menu once, my sub cat appears but the item I was looking before is still front of me when I want it to disappear, and you will guess if I double click it close the menu bar and nothing happen. Ok this is what I need guys, I am not a technical person and have quite difficulties to understand the other side of the web so if I havent been clear enough, any questions I am happy to answer it :) Cheers