Shoutbox

first of all: hey! im teh new one!!11

i got a lil script knowledge issue:

imagine a window with 3 editable text inputs. text1, text2 and text3.
at the bottom i got a submit button.

what i dont know:

i need to check all of the 3 texts boxes for emptyness! if text1 empty -> error msg, else if text2 is empty msg -> error else if text 3 is empty -> error msg

if all of them are fillled with text, they should be put in a variable seperately. e.g. t1, t2 and t3, because i want to put them into a post script later for a mysql_query.

i guess this one would work with my idea: http://shoutbox.menthix.net/showthread.php?tid=82911

would be fine if someone could assist me.

EDIT: they dont need to be seperately at all