Autopopulate a form field from an email URL

Autopopulate Javascript

Email hyperlink: http://mysite.com/?fieldID1=AutopopulateA&fieldID2=AutopopulateB



Landing page fields:
                <table cellpadding=0 cellspacing=0 >
                <tr><td style="padding: 5px 0px 0px 5px;">
                <div style="position: relative; width:250px;" id="fieldID1"><div style="width: 250px;"><div class="fieldLabel"                   style="width: 250px; margin: 5px 3px; "><span style="color:#265b80; font-family: arial font-size: 12pt"><strong                  >Field One:<span class="required">*</span></strong></span></div></div><input type="text" name="Field One" id                     ="fieldID1" label="Field One" class="textInput defaultText" style="margin: 0 3px 5px 3px; height: 20px; width:                   200px;"></div></td>
                
                <td width="40px">&nbsp;</td>
                
                <td style="padding: 5px 0px 0px 5px;">
                <div style="position: relative; width:200px;" id="fieldID2"><div style="width: 200px; "><div class="fieldLabel"                  style="width: 200px; margin: 5px 3px; "><span style="color:#265b80; font-family: arial font-size: 12pt"><strong                  >Field Two:<span class="required">*</span></strong></span></div></div><input type="text" name="Field Two" id                     ="fieldID2" label="Field Two:" class="textInput defaultText" style="margin: 0 3px 5px 3px; height: 20px; width:                  200px;"></div></td>
                </tr>
                </table>




Landing page Javascript (add before </body>):
                <script>

                var fieldID1 = "";
                var fieldID2 = "";
                fieldID1 = getParameterByName('fieldID1');
                fieldID2 = getParameterByName('fieldID2');
                if (fieldID1 != -1){
                                document.getElementById("fieldID1").value = fieldID1;
                }
                if (fieldID2 != -1){
                                document.getElementById("fieldID2").value = fieldID2;
                }



                function getParameterByName(name) {
                  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
                   var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
                      results = regex.exec(location.search);
                   return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
                }
                </script>