Source: Harjo Kompagnie, Direct ICT
var vPhoneNumber = arguments[0] var vString = 'skype:' + vPhoneNumber + '?call' if(utils.stringMiddle(application.getOSName(),1,7) == "Windows") { application.executeProgram('rundll32', 'url.dll,FileProtocolHandler',vString) } else { application.showURL(vString) }