Launch external URL via Form Function

 SSWA plsql function (www and wwk) don't work in 12i.   Is there a replacement?  I would like to add a menu item for a responsibility to launch an external web program.  Mostly there to make person in system be able to find external app easily as it is loosely related to what they are doing in EBS already.  I assume one could write a OA app to do it, but that seems excessive.  Or maybe there is a generic OA program already that takes target URL as a parameter??

Thanks,

Jeff