How do I find the jobid of my report run by URL

When I run a report by URL the resulting report is cached under a jobid.  As long as it is on the cache I can retrieve it again and again, as long as I know the jobid.  How do I find the job id programmatically; that is, without opening the console and looking it up myself.  I want to be able to hand that jobid off to another module with other responsibilities, such as storing the report output into a document manager system, sending notification emails to subscribed email addresses, etc.

Thanks in advance

Hank