1.Login to your blogger dashboard--> layout- -> Edit HTML
2.Scroll down to where you see tag .
3.Copy below code and paste it just before the tag .
Neat Multi Tab View Widget
4.Now go to Layout-->Page Element and click on "Add a gadget".
5.Select "html/java script" and add the code given below and click save.
ENTER-TAB1-CONTENT-HERE
ENTER-TAB2-CONTENT-HERE
ENTER-TAB3-CONTENT-HERE
ENTER-TAB4-CONTENT-HERE
Note:
You can change Tab Names (Popular,Recent,Categories,Comments) as your choice.
Replace ENTER-TABX-CONTENT-HEREs with your contents.