function isCPF( txtField ){ 
  var i; 
  s = txtField.value;  
  var c = s.substr(0,9); 
  var dv = s.substr(9,2); 
  var d1 = 0; 

  for (i = 0; i < 9; i++){ 
    d1 += c.charAt(i)*(10-i); 
  } 
  if (d1 == 0) return false;   
  d1 = 11 - (d1 % 11); 
  if (d1 > 9) d1 = 0; 
  if (dv.charAt(0) != d1) return false; 
  d1 *= 2; 
  for (i = 0; i < 9; i++){ 
    d1 += c.charAt(i)*(11-i);   
  } 
  d1 = 11 - (d1 % 11); 
  if (d1 > 9) d1 = 0; 
  if (dv.charAt(1) != d1) return false; 
   if( s == "00000000000" ||  s == "11111111111" ||  s == "22222222222" ||  s == "33333333333" ||  s == "44444444444" ||   s == "55555555555" ||   s == "66666666666" ||   s == "77777777777" || s == "88888888888" ||   s == "99999999999")  return false;
   return true; 
}




function isMail(mailField){

  strMail = mailField.value;

  var re = new RegExp;

  re = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

  var arr = re.exec(strMail);

  if (arr == null)

    return(false);

  else

    return(true);

}





function minLen(txtField, minVal){

  strExp = txtField.value;

  l = strExp.length;

  if (l < minVal)

    return(true);

  else

    return(false);

}



function maxLen(txtField, maxVal){

  strExp = txtField.value;

  l = strExp.length;

  if (l > maxVal)

    return(true);

  else

    return(false);

}



function isBlank(txtField){

  if (txtField.value)

    return (false);

  else

    return(true);

}



function isSelectedZero(txtField){

  selected = txtField.selectedIndex;

  if (selected == 0)

    return(true);

  else

    return(false);

}



function isNumber(txtField){

  numExp = txtField.value;

  if (isNaN(numExp) || (numExp.length == 0))

    return (false);

  else

    return(true);

}

function trim(valor){
	for (i=0;i<valor.length;i++){
		if(valor.substr(i,1) != " "){
			valor = valor.substr(i);
			break;
		}
		if (i == valor.length-1){
			valor = "";
		}
	}
	for (i=valor.length-1;i>=0;i--){
		if(valor.substr(i,1) != " "){
			valor = valor.substr(0,i+1);
			break;
		}
	}
	return valor;
}


function mascara_global(mascara, valor){
	var mascara_utilizar;
	var mascara_limpa;
	var temp;
	var i;
	var j;
	var caracter;
	var separador;
	var dif;
	var validar;
	var mult;
	var ret;
	var tam;
	var tvalor;
	var valorm;
	var masct;
	tvalor = "";
	ret = "";
	caracter = "#";
	separador = "|";
	mascara_utilizar = "";
	
	valor = trim(valor);
	if (valor == "") return valor;
	temp = mascara.split(separador);

	dif = 1000;
	

	valorm = valor;

	for (i=0;i<valor.length;i++){
		if (!isNaN(valor.substr(i,1))){
			tvalor = tvalor + valor.substr(i,1);
		}
	}
	valor = tvalor;

	for (i = 0; i<temp.length;i++){
		mult = "";
		validar = 0;
		for (j=0;j<temp[i].length;j++){
			if (temp[i].substr(j,1) == "]"){
				temp[i] = temp[i].substr(j+1);
				break;
			}
			if (validar == 1)mult = mult + temp[i].substr(j,1);
			if (temp[i].substr(j,1) == "[")validar = 1;
		}
		for (j=0;j<valor.length;j++){
			temp[i] = mult + temp[i];
		}
	}
	
	
	if (temp.length == 1){
		mascara_utilizar = temp[0];
		mascara_limpa = "";
		for (j=0;j<mascara_utilizar.length;j++){
			if (mascara_utilizar.substr(j,1) == caracter){
				mascara_limpa = mascara_limpa + caracter;
			}
		}
		tam = mascara_limpa.length;
	}else{

		for (i=0;i<temp.length;i++){
			mascara_limpa = "";
			for (j=0;j<temp[i].length;j++){
				if (temp[i].substr(j,1) == caracter){
					mascara_limpa = mascara_limpa + caracter;
				}
			}
			
			if (valor.length > mascara_limpa.length){
				if (dif > (valor.length - mascara_limpa.length)){
					dif = valor.length - mascara_limpa.length;
					mascara_utilizar = temp[i];
					tam = mascara_limpa.length;
				}
			}else if (valor.length < mascara_limpa.length){
				if (dif > (mascara_limpa.length - valor.length)){
					dif = mascara_limpa.length - valor.length;
					mascara_utilizar = temp[i];
					tam = mascara_limpa.length;
				}
			}else{
				mascara_utilizar = temp[i];
				tam = mascara_limpa.length;
				break;
			}
		}
	}
	
	if (valor.length > tam){
		valor = valor.substr(0,tam);
	}else if (valor.length < tam){
		masct = "";
		j = valor.length;
		for (i = mascara_utilizar.length-1;i>=0;i--){
			if (j == 0) break;
			if (mascara_utilizar.substr(i,1) == caracter){
				j--;
			}
			masct = mascara_utilizar.substr(i,1) + masct;
		}
		mascara_utilizar = masct;
	}
	
	j = mascara_utilizar.length -1;
	for (i = valor.length - 1;i>=0;i--){
		if (mascara_utilizar.substr(j,1) != caracter){
			ret = mascara_utilizar.substr(j,1) + ret;
			j--;
		}
		ret = valor.substr(i,1) + ret;
		j--;
	}
	return ret;
}