Drill Doww in Cross Tab Crystal reports

In cross tab i have List of hospital name in Y axis. If i click any Hospital name it should drill down new tab and show the list of doctors in that hospital. If i click a particular doctor name ,it should show all the info abount the doctor

field name
aaaaa
bbbbb
cccccc

if i click aaaaa
it should show all the doctor in hospital aaaaa

Could any one can help me in this.Its a urgent issue for me
please kindly help me anybody knows this
[487 byte] By [vashanth_d] at [2007-11-20 11:36:56]