// JavaScript Document
window.onload = attachFormHandlers;
function attachFormHandlers()
{
  // Ensure we're working with a 'relatively' standards 
  // compliant browser
  if (document.getElementsByTagName)
  {
    var objForm = document.getElementsByTagName('form');

    for (var iCounter=0; iCounter<objForm.length; iCounter++)
      objForm[iCounter].onsubmit = function(){return checkForm(this);}
  }
}

function checkForm(objForm)
{
  var arClass, bValid;
  var objField = objForm.getElementsByTagName('*');

  for (var iFieldCounter=0; iFieldCounter<objField.length; iFieldCounter++)
  {
    // Allow for multiple values being assigned to the class attribute
    arClass = objField[iFieldCounter].className.split(' ');
    for (var iClassCounter=0; iClassCounter<arClass.length; iClassCounter++)
    {
      switch (arClass[iClassCounter])
      {
        case 'string':
           bValid = isString(objField[iFieldCounter].value.replace(/^\s*|\s*$/g, ''));
           break;
        case 'number' :
           bValid = isNumber(objField[iFieldCounter].value);
           break;
        case 'email' :
           bValid = isEmail(objField[iFieldCounter].value);
           break;
        case 'date' :
           bValid = isDate(objField[iFieldCounter].value);
           break;			 
        case 'cpf' :
           bValid = isCpf(objField[iFieldCounter].value);
           break;					   		   
        default:
           bValid = true;
      }

      if (bValid == false)
      {
        // If this field is invalid, leave the testing early,
        // and alert the visitor to this error
		//alert('Você deve informar o campo ' + objField[iFieldCounter].name);
		alert('Preencha esse campo corretamente!');
        objField[iFieldCounter].select();
		objField[iFieldCounter].style.backgroundColor = "#f2f2f2";
		objField[iFieldCounter].style.border = '2px solid #FF0000';
        objField[iFieldCounter].focus();
        return false;
      }
    }
  }
  return true;
}

function isString(strValue)
{
  return (typeof strValue == 'string' && strValue != '' && isNaN(strValue));
}

function isNumber(strValue)
{
  return (!isNaN(strValue) && strValue != '');
}

function isEmail(strValue)
{
  var objRE = /^[\w-\.\']{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]{2,}$/;

  return (strValue != '' && objRE.test(strValue));
}
function isDate(strValue){
	return !isNaN(new Date(strValue));
}
function isCpf(strValue){
	return validaCpf(strValue);
}
function validaCpf(st) {
	st = st;
	st = st.replace(".","");
	st = st.replace(".","");
	st = st.replace(".","");
	st = st.replace("-","");
	
	if (st == "") return (false);
	l = st.length;

	//aleterado para se usuário não digitar os zeros na frente do CPF, completar sozinho
	if ((l == 9) || (l == 8)) {
		for (i = l ; i < 10; i++) {
			st = '0' + st
		}
	}

	l = st.length;
	st2 = "";
	for (i = 0; i < l; i++) {
		caracter = st.substring(i,i+1);
		if ((caracter >= '0') && (caracter <= '9'));
		st2 = st2 + caracter;
	}

	if ((st2.length > 11) || (st2.length < 10))
		return (false);

	if (st2.length==10)
		st2 = '0' + st2;

	digito1 = st2.substring(9,10);
	digito2 = st2.substring(10,11);
	digito1 = parseInt(digito1,10);
	digito2 = parseInt(digito2,10);
	sum = 0; mul = 10;
	for (i = 0; i < 9 ; i++) {
		digit = st2.substring(i,i+1);
		tproduct = parseInt(digit ,10) * mul;
		sum += tproduct;
		mul--;
	}

	dig1 = ( sum % 11 );
	if ( dig1==0 || dig1==1 )
		dig1=0;
	else
		dig1 = 11 - dig1;
	
	if (dig1!=digito1)
		return (false);

	sum = 0;
	mul = 11;
	for (i = 0; i < 10 ; i++) {
		digit = st2.substring(i,i+1);
		tproduct = parseInt(digit ,10)*mul;
		sum += tproduct;
		mul--;
	}

	dig2 = (sum % 11);
	if ( dig2==0 || dig2==1 )
		dig2=0;
	else
		dig2 = 11 - dig2;

	if (dig2 != digito2)
		return (false);
return (true);
}