Conditional Mandatory fields

Hi Friends,

I need to make 5 fields mandatory based on the value of a status field which is not the driving picklist. I know this can be done by forcefully putting some value in the actual driving picklist and controlling the layouts. But is there any other option like an out of the box feature which is planned for future releases?

or can this be done using java script - when you select status as "Won" , selected fields have to be shown in red. We actually have a workflow pop up alert which shows all the field names to be filled but users are finding this annoying.