Round in dynamic text box

hi guys. I want to have my textbox round to seconds instead of having lots of decimal places. this is what I have to show the text but I don’t know how to make it round:

cfdPosition=_root.cfdSong.position/1000;

I am pretty sure you use Math.floor() but I don’t know what to put in the parenthesis. please help me.

if(problem==0)
_root.brian2=“thank you”;
else
{:egg: }

Math.round(WHATEVERYOUWANTTOROUNDGOESHERE)

or Math.floor()

or Math.ceil()