// Title: Tigra Form Validator
// URL: http://www.softcomplex.com/products/tigra_form_validator/
// Version: 1.3
// Date: 08/25/2005 (mm/dd/yyyy)
// Notes: Registration needed to use this script legally. Visit official site for details.

// regular expressions or function to validate the format
var re_dt = /^(\d{1,2})\-(\d{1,2})\-(\d{4})$/,
re_tm = /^(\d{1,2})\:(\d{1,2})\:(\d{1,2})$/,
a_formats = 
{
  'alpha'   : /^[a-zA-Z\.\-]*$/,
  'alphanum': /^\w+$/,
  'unsigned': /^\d+$/,
  'integer' : /^[\+\-]?\d*$/,
  'real'    : /^[\+\-]?\d*\.?\d*$/,
  'email'   : /^[\w-\.]+\@[\w\.-]+\.[a-z]{2,4}$/,
  'phone'   : /^[\d\.\s\-]+$/,
  'date'    : function (s_date) 
              {
                // check format
                if (!re_dt.test(s_date)) return false;
                // check allowed ranges	
                if (RegExp.$1 > 31 || RegExp.$2 > 12) return false;
                // check number of day in month
                var dt_test = new Date(RegExp.$3, Number(RegExp.$2-1), RegExp.$1);
                if (dt_test.getMonth() != Number(RegExp.$2-1)) return false;
                return true;
              },
  'time'    : function (s_time) 
              {
	        // check format
		if (!re_tm.test(s_time)) return false;
		// check allowed ranges	
		if (RegExp.$1 > 23 || RegExp.$2 > 59 || RegExp.$3 > 59) return false;
		return true;
              }
},
a_messages = [
	'No form name passed to validator construction routine',
	'No array of "%form%" form fields passed to validator construction routine',
	'Form "%form%" can not be found in this document',
	'Incomplete "%n%" form field descriptor entry. "l" attribute is missing',
	'Can not find form field "%n%" in the form "%form%"',
	'Can not find label tag (id="%t%")',
	'Can not verify match. Field "%m%" was not found',
	'Поле "%l%" обязательно для заполнения',
	'Value for "%l%" must be %mn% characters or more',
	'Value for "%l%" must be no longer than %mx% characters',
	'"%v%" - неправильное значение для поля "%l%"',
	'"%l%" must match "%ml%"'
]

// validator counstruction routine
function validator(s_form, a_fields, o_cfg)
{
  this.f_error = validator_error;
  this.f_alert = o_cfg && o_cfg.alert
		? function(s_msg) {
		                    alert(s_msg);
				    return false
				  }
		: function() { return false };
		
  // check required parameters
  if (!s_form) return this.f_alert(this.f_error(0));
  this.s_form = s_form;
	
  if (!a_fields || typeof(a_fields) != 'object') return this.f_alert(this.f_error(1));
  this.a_fields = a_fields;

  this.a_2disable = (o_cfg && o_cfg['to_disable'] && typeof(o_cfg['to_disable']) == 'object')
		    ? o_cfg['to_disable']
		    : [];		
  this.exec = validator_exec;
}

// validator execution method
function validator_exec() 
{
  var o_form = document.forms[this.s_form];
  if (!o_form) return this.f_alert(this.f_error(2));
  b_dom = document.body && document.body.innerHTML;
  // check integrity of the form fields description structure
  for (var n_key in this.a_fields)
  {
    // check input description entry
    this.a_fields[n_key]['n'] = n_key;
    if (!this.a_fields[n_key]['l']) //label
      return this.f_alert(this.f_error(3, this.a_fields[n_key]));
    o_input = o_form.elements[n_key];
    if (!o_input) 
      return this.f_alert(this.f_error(4, this.a_fields[n_key]));
    this.a_fields[n_key].o_input = o_input;
  }

  // reset labels highlight
  if (b_dom)
    for (var n_key in this.a_fields)
      if (this.a_fields[n_key]['t'])//title
      {
        var s_labeltag = this.a_fields[n_key]['t'], e_labeltag = get_element(s_labeltag);
	if (!e_labeltag) return this.f_alert(this.f_error(5, this.a_fields[n_key]));
        this.a_fields[n_key].o_tag = e_labeltag;
	// normal state parameters assigned here
	e_labeltag.className = 'tfvNormal';
      }

  // collect values depending on the type of the input
  for (var n_key in this.a_fields)
  {
    var s_value = '';
    o_input = this.a_fields[n_key].o_input;
    if (o_input.type == 'checkbox') // checkbox
      s_value = o_input.checked ? o_input.value : '';
    else if (o_input.value) // text, password, hidden
      s_value = o_input.value;
    else if (o_input.options) // select
      s_value = o_input.selectedIndex > -1
        ? o_input.options[o_input.selectedIndex].value
        : null;
    else if (o_input.length > 0) // radiobuton
      for (var n_index = 0; n_index < o_input.length; n_index++)
        if (o_input[n_index].checked)
	{
          s_value = o_input[n_index].value;
	  break;
	}
	this.a_fields[n_key]['v'] = s_value.replace(/(^\s+)|(\s+$)/g, '');
   }

   // check for errors
   var n_errors_count = 0, n_another, o_format_check;
   for (var n_key in this.a_fields) 
   {
    if (this.a_fields[n_key]['f'] && a_formats[this.a_fields[n_key]['f']])
    {
       o_format_check = a_formats[this.a_fields[n_key]['f']];
    }
    else if (this.a_fields[n_key]['f'] && custom_formats[this.a_fields[n_key]['f']])
    {
	o_format_check = custom_formats[this.a_fields[n_key]['f']];
    }
    else if (this.a_fields[n_key]['f'])
    {
	o_format_check = new RegExp(this.a_fields[n_key]['f']);
    }
    else 
       o_format_check = null;
  
     // reset previous error if any
     this.a_fields[n_key].n_error = null;

     // check reqired fields
     if (this.a_fields[n_key]['r'] && !this.a_fields[n_key]['v']) 
     {
       this.a_fields[n_key].n_error = 1;
       n_errors_count++;
     }
     // check length
     else if (this.a_fields[n_key]['mn'] && this.a_fields[n_key]['v'] != '' && String(this.a_fields[n_key]['v']).length < this.a_fields[n_key]['mn'])
     {
       this.a_fields[n_key].n_error = 2;
       n_errors_count++;
     }
     else if (this.a_fields[n_key]['mx'] && String(this.a_fields[n_key]['v']).length > this.a_fields[n_key]['mx'])
     {
       this.a_fields[n_key].n_error = 3;
       n_errors_count++;
     }
     // check format
     else if (this.a_fields[n_key]['v'] && this.a_fields[n_key]['f'] && (
			(typeof(o_format_check) == 'function'
			&& !o_format_check(this.a_fields[n_key]['v']))
			|| (typeof(o_format_check) != 'function'
			&& !o_format_check.test(this.a_fields[n_key]['v'])))
			) 
     {
       this.a_fields[n_key].n_error = 4;
       n_errors_count++;
     }
     // check match	
     else if (this.a_fields[n_key]['m']) 
     {
       for (var n_key2 in this.a_fields)
         if (n_key2 == this.a_fields[n_key]['m']) 
         {
           n_another = n_key2;
           break;
         }
       if (n_another == null)
         return this.f_alert(this.f_error(6, this.a_fields[n_key]));
       if (this.a_fields[n_another]['v'] != this.a_fields[n_key]['v']) 
       {
         this.a_fields[n_key]['ml'] = this.a_fields[n_another]['l'];
         this.a_fields[n_key].n_error = 5;
         n_errors_count++;
       }
     }
   }

   // collect error messages and highlight captions for errorneous fields
  var s_alert_message = '', e_first_error;

  if (n_errors_count) 
  {
    for (var n_key in this.a_fields) 
    {
      var n_error_type = this.a_fields[n_key].n_error, s_message = '';
      if (n_error_type) s_message = this.f_error(n_error_type + 6, this.a_fields[n_key]);
      if (s_message) 
      {
        if (!e_first_error) e_first_error = o_form.elements[n_key];
        s_alert_message += s_message + "\n";
	// highlighted state parameters assigned here
	if (b_dom && this.a_fields[n_key].o_tag) this.a_fields[n_key].o_tag.className = 'tfvHighlight';
      }
    }
    alert(s_alert_message);
    // set focus to first errorneous field
    if (e_first_error.focus && e_first_error.type != 'hidden'  && !e_first_error.disabled)
      eval("e_first_error.focus()");
    // cancel form submission if errors detected
    return false;
  }
	
  for (n_key in this.a_2disable)
  if (o_form.elements[this.a_2disable[n_key]])
    o_form.elements[this.a_2disable[n_key]].disabled = true;
  return true;
}

function validator_error(n_index) 
{
  var s_ = a_messages[n_index], n_i = 1, s_key;
  for (; n_i < arguments.length; n_i ++)
    for (s_key in arguments[n_i])
      s_ = s_.replace('%' + s_key + '%', arguments[n_i][s_key]);
      s_ = s_.replace('%form%', this.s_form);
  return s_
}

function get_element (s_id) 
{
  return (document.all ? document.all[s_id] 
	                     : (
			         document.getElementById 
			           ? document.getElementById(s_id) 
				   : null
				)
	);
}