I didn’t knew about overwriting with updates 🙂 Thanks!
By header I mean I want to place a menu horizontally, 50px from top, next to the logo on the left (not under a picture like it is after WP installation).
As far as I know, to modify menu by a widget it need to be placed in widget area – that is why I want to create it there to apply JQuery mega menu.
Am I right/clear to you? 🙂
[edit]
I thought about using created widgetarea in a sidebar, placing there div and position it relatively eg. top-150;, left-400px;.
My question: how does widget area behave? is it similar to div or what?:P
Sorry for any language mistakes.