create a link to open a folder in a network share on our intranet flex 3.6

Hi

How do i create a link to open a folder in a network share on our intranet
Normal i wrote in pop up file://fs01/data$/Gruppe/GIS/TELE_RDS/Projektering/{TEXTSTRING} or file://M:/Gruppe/GIS/TELE_RDS/Projektering/{TEXTSTRING}

like this <a href="file://M:/Gruppe/GIS/TELE_RDS/Projektering/{TEXTSTRING}" target='_blank'>Link</a>
But i is not working in flex 3.6
it workt in flex 3.0 in pop up, how come, its not working longer?