javascript data type ?

[sithum]

Hi ,
I am sending a function an array of values
which contain '09' , '15','20' ,...etc
everything is working fine except when I have to do something with '09' it seems to truncate off the zero at the begining and pass to the function a 9 instead of a 09

What I want to know is how do I make the function interpert the value as 09 it seems to be converting the parameter to a number instead of the string value '09'

array[0] = '09';
array[1] = '15';
..etc

Thanks for any help