expand collapse functionality in cognos crosstab

[raghunori]

hello cognos experts..i am trying to create a finance type reports using crosstab in cognos report studio. one of the requirements is to have expand/collapse functionality in the rows like how we see if we export an income statement or a balance sheet statement. we will have summary and detail level information. something like below, where x is at summary and a,b,c are at detail level. I know it can be achieved using custom java script. Do anyone has the latest script? Some of the earlier links i tried to download are broken. Thanks in advance

       Month1 Month2 Month3
x
  a
  b
  c
y
  d
  e
  f