making header fixed and visible on scolling

[prerak]

i want to make header fixed .or when we scroll the page a small header comes sliding keep fixed while scrolling...i tried to making changes to style.css but it hides when i comes above slider , cart ,thumbnails,etc .please help me thank you in advance

[RajaSarma]

I also need this.
When the website is scrolling down, then i need the header will be fixed.
Please reply to this topic, please.

[nhdl]

yes how to.....