[jQuery] I need two progress bars superimposed on one another

Hi,

Here is my requirement: I need to have a progress bar which should
show me details of the following:

Total number of test cases ran,
Total number of test cases passed. it should be displayed as shown:

|---------------a>----------------------------------
b>----------------------------|
0               20
60                         100

here, the entire length of the progress bar will correspond to count
of total number of test cases I have,

the level till b> from 0 will give me the total number of test cases
executed

and level till a> from 0 will give me the total number of test cases
Passed out of the total number of test cases ran

a> can never go beyond b> and b> can never go beyond 100 mark

Is this achievable through this wonderful jquery progress bar ...??
Please give me advise :-) ..