display multilevel categories by recursion

[eluser]rizkhan[/eluser]
i want to display multilevel categories by recursion
like

cat1
child1 cat1
child1 cat2
cat2
child2 cat1
child2 cat2
child2 cat3
cat3
child3 cat1

etc

my sql table structure is below

catid,catname,parentid,date_added