// Author: Stuart Cochrane
// URL: www.freecontactform.com
// Email: stuartc1@gmail.com
// Date: 3rd July 2007
// Version: 3.0 Beta
// License: Free to use and edit, but all comments must remain intact.
 
// SPECIFY ALL REQUIRED FIELDS AND
// VALIDATION TYPE

// EXAMPLES:
// one or more characters
// required.add('[ FIELDID ]', 'NOT_EMPTY');
// alpha characters, no spaces
// required.add('[ FIELDID ]', 'ALPHA');
// alpha characters, accept spaces
// required.add('[ FIELDID ]', 'ALPHASPACE');
// numeric characters, no spaces
// required.add('[ FIELDID ]', 'NUMERIC');
// numeric characters, also accepts +-.
// required.add('[ FIELDID ]', 'NUMERICPLUS');
// alpha and numeric characters, no spaces
// required.add('[ FIELDID ]', 'ALPHANUM');
// alpha and numeric characters, accept spaces
// required.add('[ FIELDID ]', 'ALPHANUMSPACE');
// email address
// required.add('[ FIELDID ]', 'EMAIL');
// date format yyyy-mm-dd, accepts - or / separators
// required.add('[ FIELDID ]', 'YYYYMMDD');
// date format dd-mm-yyyy, accepts - or / separators
// required.add('[ FIELDID ]', 'DDMMYYYY');
// date format mm-dd-yyyy, accepts - or / separators
// required.add('[ FIELDID ]', 'MMDDYYYY');
// enter own regular expression, example: '^[0-9]{3}$'
// required.add('[ FIELDID ]', '[ REGULAR EXPRESSION ]');

// NOTES:
// [ FIELD ID ] = REPLACE WITH ACTUAL FIELD ID VALUE
// example: <input type="text" name="THIS" ID="THIS"> = THIS

// to specify your own regular expression,
// enter the literal regex as type
// example: required.add('fieldid', '^[0-9]{3}$');
// note: no leading or preceeding / (slash) is required!


function $$(id){try{var tmp=document.getElementById(id).value;}
catch(e){alert("Field "+id+" does not exist!\nvalidation is configured on a field with no ID");return false;}
if(tmp==""){alert("Field "+id+" cannot be empty");return false;}
return tmp;}
var required={field:[],add:function(name,type){this.field[this.field.length]=[name,type];},out:function(){return this.field;}}
var validate={check:function(){var tmp;for(var i=0;i<required.field.length;i++){this.tmp=$$(required.field[i][0]);if(this.tmp){if(this.checkit(required.field[i][0],required.field[i][1])){}else{alert("Field "+required.field[i][0]+" not valid\n");document.getElementById(required.field[i][0]).focus();return false;}}else{try{document.getElementById(required.field[i][0]).focus();}catch(e){}
return false;}}
return true;},checkit:function(value,type){exp:'';switch(type){case"NOT_EMPTY":if(this.trim($$(value)).length<1){return false;}else{return true;}
break;case"ALPHA":exp=/^[A-Za-z]+$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"ALPHASPACE":exp=/^[A-Za-z ]+$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"NUMERIC":exp=/^[0-9]+$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"NUMERICPLUS":exp=/(^-*\d+$)|(^-*\d+\.\d+$)/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"ALPHANUM":exp=/^[a-zA-Z0-9]+$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"ALPHANUMSPACE":exp=/^[a-zA-Z0-9 ]+$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"EMAIL":exp=/^[a-zA-Z0-9._%-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"YYYYMMDD":exp=/^(19|20)[0-9][0-9][- /.](0[1-9]|1[012])[-/.](0[1-9]|[12][0-9]|3[01])$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"DDMMYYYY":exp=/^(0[1-9]|[12][0-9]|3[01])[- /.](0[1-9]|1[012])[-/.](19|20)[0-9][0-9]$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;case"MMDDYYYY":exp=/^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[-/.](19|20)[0-9][0-9]$/;if($$(value).match(exp)==null){return false;}else{return true;}
break;default:exp=new RegExp(type);if($$(value).match(exp)==null){return false;}else{return true;}}},trim:function(s){return s.replace(/^\s+/,'').replace(/\s+$/,'');}}
function $val(id){return document.getElementById(id);}
function trim(id){$val(id).value=$val(id).value.replace(/^\s+/,'').replace(/\s+$/,'');}