Applets on IMac

Hi,

My Applets are not working on any of the browsers on IMac. They work fine on any browser on any other m/c. The errors listed in the java console of the browser are varying. Sometimes the applet is running but cannot be seen. some times a relatively less complicated applet does work. but most of the applets dont work. seemingly, most of the times the VM is not able to interpret the class file. Should I make any changes to the code or to the browser settings? the "Enable Java" option is checked in the browser settings.

kindly help urgently.

rgds,
rugved.