// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "-";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters;
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}

 
function txtBoxFormat(objForm, strField, sMask, evtKeyPress) {
     var i, nCount, sValue, fldLen, mskLen,bolMask, sCod, nTecla;
     nTecla = (evtKeyPress.which) ? evtKeyPress.which : evtKeyPress.keyCode;
     sValue = objForm[strField].value;
     // Limpa todos os caracteres de formatação que
     // já estiverem no campo.
     expressao = /[\.\/\-\(\)\,\;\: ]/gi;
     sValue = sValue.toString().replace(expressao, '');
     fldLen = sValue.length;
     mskLen = sMask.length;

     i = 0;
     nCount = 0;
     sCod = "";
     mskLen = fldLen;

     while (i <= mskLen) {
       bolMask = ((sMask.charAt(i) == "-") || (sMask.charAt(i) == ".") || (sMask.charAt(i) == "/") || (sMask.charAt(i) == ",") || (sMask.charAt(i) == ";") || (sMask.charAt(i) == ":"))
       bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))

       if (bolMask) {
         sCod += sMask.charAt(i);
         mskLen++; }
       else {
         sCod += sValue.charAt(nCount);
         nCount++;
       }

       i++;
     }

     objForm[strField].value = sCod;

     if (nTecla != 8 && nTecla != 13)
      { // backspace enter
       if (sMask.charAt(i-1) == "9") 
       { // apenas números...
         return ((nTecla > 47) && (nTecla < 58)); 
       } // números de 0 a 9
       else 
       { 
            if (sMask.charAt(i-1) == "x") 
           {
             return ((nTecla > 64) && (nTecla < 123)); 
           }            else 
           { 
            return true;
          } 
       } 
      }
     else 
     {
       return true;
     }
   }