What form input type does this?

This is driving me mad, It's way too early and I can't think :P

In one of my databases there will be a need to insert a user a couple of times eg

userid categoryid
1 3
1 5
2 1
2 3
3 4
3 5
etc etc

so what in a form can I use the get multiple values from the use like this, eg the question might be 'please select the categories...' and the user can hen pick as many of them as he/she wants.

Easy question no doubt but my brain hasn't kicked in yet.

checkboxes?

radio buttons, you can only select 1 in a group
pull down menus can only select 1
listboxes in VB you can select more than 1

what language would this be in? I initially thought html.

why not run catId1 and catId2 for the same userId

Use checkbox with multiple set to true ...if your are using STRUTS u can use <html:multibox>
then just populate the collection and read in you program and persist to the DB

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