Send form data button works fine in Acrobat Pro 9 Extended but not in Adobe Reader 9

I have set up a button on my form that uses javascript to send the form data within the body of the email (what the user wants). This works fine within Pro 9 extended but when I test it out in Reader 9 the button displays "Connecting" for a second but doesn't fire up the email window to send it. I have been reading that the solution is with Advanced > Extend Features in Adobe Reader but I tried that with no difference.
 
Any / All advice would be greatly appreciated. Thanks.
 
GW
 
Here's the javascript:
 
var to = this.getField("to");
 
var statetagv = this.getField("st_tag");
 
var pov = this.getField("po_num");
var unitv = this.getField("unit_num");
var loccodev = this.getField("loc_code");
var modelv = this.getField("model_num");
var serialv = this.getField("serial_num");
 
var brandv = this.getField("brand_comp");
 
var deptv = this.getField("dept");
 
var bldlocationv = this.getField("located");
 
var softofficev = this.getField("soft_msoffice");
 
var softsymantecv = this.getField("soft_symantec");
 
var softxpvistav = this.getField("soft_xpvista");
 
var namev = this.getField("Name");
 
var phonenumv = this.getField("phone_num");
 
var emailv = this.getField("e_mail");
 
var subbyv = this.getField("sub_by");
  
var subject = "New PC Notification"
 
var emailBody = "";
emailBody += "NEW PC\r\n";
emailBody += "STATE TAG NUMBER: " + statetagv.value + "\r\n";
emailBody += "\r\n";
emailBody += "PURCHASE ORDER:";
emailBody += pov.value + "\r\n";
emailBody += "UNIT NUMBER:" + unitv.value + "\r\n";
emailBody += "LOC CODE:" + loccodev.value + "\r\n";
emailBody += "MODEL:" + modelv.value + "\r\n";
emailBody += "SERIAL NUMBER:";
emailBody += serialv.value + "\r\n";
emailBody += "BRAND:";
emailBody += brandv.value + "\r\n";
emailBody += "\r\n";
emailBody += "DEPARTMENT:";
emailBody += deptv.value + "\r\n";
emailBody += "LOCATION:" + bldlocationv.value + "\r\n";
emailBody += "\r\n";
emailBody += "SOFTWARE MS OFFICE:" + softofficev.value + "\r\n";
emailBody += "SOFTWARE SYMANTEC:" + softsymantecv.value + "\r\n";
emailBody += "SOFTWARE MS XP OR VISTA:" + softxpvistav.value + "\r\n";
emailBody += "\r\n";
emailBody += "NAME:" + namev.value + "\r\n";
emailBody += "PHONE:" + phonenumv.value + "\r\n";
emailBody += "EMAIL:" + emailv.value + "\r\n";
emailBody += "\r\n";
emailBody += "SUBMITTED BY:";
emailBody += subbyv.value + "\r\n";
    
app.mailMsg({
 
bUI: true,
 
cTo: to.value,
 
cSubject: subject,
 
cMsg: emailBody
 
} );