Job Report on SQL 2005

Some times you need acces to jobs' schedule related information in a server, but you do not have acess to the server agent information or there are too many jobs to check them one by one.
We need a helper function "IntegerToBinary" (it is clear what is it for) to extract hiden information in columns like freq_interval from table (view) in the msdb database.
IntegerToBinary is an adaption to T-SQL of the classic algorithm for geting the binary representation of an integer.That function script is in the first section after that is the report's script which display jobs' info.