this.mailDoc - Is there a way to bring up "Select Email Client" Window?

var cToAddr = "xxxxxxx@hotmail.com"
var cCCAddr = this.getField("tour").value;
var cSubLine = "Troop 497 Scout Credit - " + this.getField("CampoutEvent").value;
this.mailDoc({bUI: true, cTo: cToAddr, cCc: cCCAddr, cSubject: cSubLine});

I have this code which is great and does what is needed, but is there a way to bring up the "Select Email Client" Window like the Submit a Form Command for those who do not have a client?

Donovan McNeil