// onkeypress="return mask(true, event, this, '####-#');"
// onkeypress="return mask(true, event, this, '###.###.###-##');"

/**
 * Mascara Dinâmica
 */
if (document.layers)
  window.captureEvents(Event.KEYDOWN | Event.KEYUP);

function mask(isNum, event, field, mask, maxLength) {
  var keyCode;
  
  if (event.srcElement)
    keyCode = event.keyCode;
  else if (event.target)
    keyCode = event.which;

  var maskStack = new Array();

  var isDynMask = false;

  if (mask.indexOf('[') != -1)
    isDynMask = true;

  var length = mask.length;

  for (var i = 0; i < length; i++)
    maskStack.push(mask.charAt(i));

  var value = field.value;
  var i = value.length;
  
  if (keyCode == 0 || keyCode == 8)
    return true;

//código adaptado para aceitar "." e "," além de números

  if (isNum && (keyCode < 48 || keyCode > 57) && (keyCode != 188) && (keyCode != 190))
    return false;

  if (!isDynMask && i < length) {

  if (maskStack.toString().indexOf(String.fromCharCode(keyCode)) != -1 && keyCode != 8)
  {
    return false;
  }
  else
  {
    if (keyCode != 8) {
    if (maskStack[i] != '#')
    {
    var old = field.value;
    field.value = old + maskStack[i];
    }
  }

  if (autoTab(field, keyCode, length)) {
    if (!document.layers) {
      return true;
    } else if (keyCode != 8) {
      field.value += String.fromCharCode(keyCode);
      return false;
      } else {
      return true;
      }
    } else {
      return false;
    }
  }

  } else if (isDynMask) {

  var maskChars = "";
  for (var j = 0; j < maskStack.length; j++){
    if (maskStack[j] != '#' && maskStack[j] != '[' && maskStack[j] != ']')
      maskChars += maskStack[j];
  }

  var tempValue = "";
  for (var j = 0; j < value.length; j++) {
    if (maskChars.indexOf(value.charAt(j)) == -1)
      tempValue += value.charAt(j);
  }

  value = tempValue + String.fromCharCode(keyCode);

  if (maskChars.indexOf(String.fromCharCode(keyCode)) != -1) {
    return false;
  } else {
    var staticMask = mask.substring(mask.indexOf(']') + 1);
    var dynMask = mask.substring(mask.indexOf('[') + 1, mask.indexOf(']'));
    var realMask = new Array;
    if (mask.indexOf('[') == 0) {
      var countStaticMask = staticMask.length - 1;
      var countDynMask = dynMask.length - 1;
      for (var j = value.length - 1; j >= 0; j--) {
        if (countStaticMask >= 0) {
          realMask.push(staticMask.charAt(countStaticMask));
          countStaticMask--;
        }
        if(countStaticMask < 0) {
          if (countDynMask >= 0) {
            if (dynMask.charAt(countDynMask) != '#') {
              realMask.push(dynMask.charAt(countDynMask));
              countDynMask--;
            }
          }
          if (countDynMask == -1) {
            countDynMask = dynMask.length - 1;
          }
          realMask.push(dynMask.charAt(countDynMask));
          countDynMask--;
        }
      }
    }

    var result = "";

    var countValue = 0;
    while (realMask.length > 0) {
      var c = realMask.pop();
      if (c == '#') {
        result += value.charAt(countValue);
        countValue++;
      } else {
        result += c;
      }
    }

    field.value = result;

    if (maxLength != undefined && value.length == maxLength) {
    
      var form = field.form;
      for (var i = 0; i < form.elements.length; i++) {
        if (form.elements[i] == field) {
          field.blur();
          //if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
          //if (form.elements[i + 1] != null)
          if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
            form.elements[i + 1].focus();
            break;
          }
        }
      }
      return false;
    }
  } else {
    return false;
  }

  function autoTab(field, keyCode, length) {
    var i = field.value.length;
  
    if (i == length - 1) {
      field.value += String.fromCharCode(keyCode);
    var form = field.form;
    for (var i = 0; i < form.elements.length; i++) {
      if (form.elements[i] == field) {
        field.blur();
        //if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
        //if (form.elements[i + 1] != null)
        if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
          form.elements[i + 1].focus();
          break;
        }
      }
      return false;
    } else {
      return true;
    }
  }
}


function letreiro(campo,texto){
 if (campo.value == texto){
  campo.value="";
  }else if(campo.value==""){
  campo.value=texto;
  }
}