Formatting Address Fields into one

Question

Using Acrobat X PRO:
I have a multi-page document in which a user is prompted for the address in two different formats:
1) With the address split into 4 different values/fields:
Street Field, City Field, State Field, Zip Field
Example: "1234 Count Rd" (Next Line) "St Louis", "MO"  "55555"
2) With the address all together:
Complete Address on one line with a maximum length of 40 Characters.
Example: 1234 Count Rd, St. Louis, MO 55555
I would like users to be able to Fill in the Street, City, State, and Zip fields, and no matter what the format of the following fields, have the data autopopulated.
This isn't a problem for example #1.  However, with #2 if i place all fields close together, I have to guess on how far apart to space each field and still have it fit and format properly.
Is there any way to combine the values of 4 fields into one value (separated by commas)?
Making the address field 'auto-fit' may be necessary but it's ugly if there is extra space in the remaining fields. 
PLEASE SEE THIS EXAMPLE document i have created for the purpose of this post

Answer 1

And if the combined fields are longer than 40 characters?
With Acrobat 4 there was a sample form that one entered the data in fields like tile, first name, mi, last name, abd degrees  and then created a full name from those individual fields and adjusted for missing data.
The doucment level script:
/ Concatenate 3 strings with separators where needed
function fillin(s1, s2, s3, sep) {
Purpose: concatenate up to 3 strings with an optional separator
inputs:
s1: required input string text or empty string
s2: required input string text or empty string
s3: required input string text or empty string
sep: optional separator sting
returns:
sResult concatenated string
// variable to determine how to concatenate the strings
  var test = 0; // all strings null
  var sResult; // re slut string to return
// force any number string to a character string for input variables
  s1 = s1.toString();
  s2 = s2.toString();
  s3 = s3.toString();
  if(sep.toString() == undefined) sep = ''; // if sep is undefined force to null
assign a binary value for each string present 
so the computed value of the strings will indicate which strings are present
when converted to a binary value
  if (s1 != "") test += 1; // string 1 present add binary value: 001
  if (s2 != "") test += 2; // string 2 present add binary value: 010
  if (s3 != "") test += 4; // string 3 present add binary value: 100
  /* return appropriate string combination based on
  calculated test value as a binary value
  switch (test.toString(2)) {
  case "0": // no non-empty strings passed - binary 0
     sResult = "";
  break;
  case "1": // only string 1 present - binary 1
     sResult = s1;  
  break;
  case "10": // only string 2 present - binary 10
     sResult = s2;  
  break;
  case "11": // string 1 and 2 present - binary 10 + 1
     sResult = s1 + sep + s2; 
  break;
  case "100": // only string 3 present - binary 100
     sResult = s3;
  break;
  case "101": // string 1 and 3 - binary 100 + 001
     sResult = s1 + sep + s3; 
  break;
  case "110": // string 2 and 3 - binary 100 + 010
     sResult = s2 + sep + s3; 
  break;
  case "111": // all 3 strings  - binary 100 + 010 + 001
     sResult = s1 + sep + s2 + sep + s3; 
  break;
  default: // any missed combinations
     sResult = "";
  break;
return sResult;
And then one could use a custom calculation script for a full address field:
// Full business address including country
function doFullBusinessAddress() {
  var ba = this.getField("business.address.full");
  var bc = this.getField("business.address.citystatezip");
  var bu = this.getField("business.address.country");
  event.value = fillin(ba.value, bc.value, bu.value, ", ");
doFullBusinessAddress();