var Browser = new Object();

Browser.isMozilla = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined') && (typeof HTMLDocument != 'undefined');
Browser.isIE = window.ActiveXObject ? true : false;
Browser.isFirefox = (navigator.userAgent.toLowerCase().indexOf("firefox") != - 1);
Browser.isSafari = (navigator.userAgent.toLowerCase().indexOf("safari") != - 1);
Browser.isOpera = (navigator.userAgent.toLowerCase().indexOf("opera") != - 1);

var Utils = new Object();

Utils.htmlEncode = function(text)
{
  return text.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}

Utils.trim = function( text )
{
  if (typeof(text) == "string")
  {
    return text.replace(/^\s*|\s*$/g, "");
  }
  else
  {
    return text;
  }
}

Utils.isEmpty = function( val )
{
  switch (typeof(val))
  {
    case 'string':
      return Utils.trim(val).length == 0 ? true : false;
      break;
    case 'number':
      return val == 0;
      break;
    case 'object':
      return val == null;
      break;
    case 'array':
      return val.length == 0;
      break;
    default:
      return true;
  }
}

Utils.isROCSSN = function(SSN)
{
  SSN = SSN.toUpperCase();
  // 驗證格式是否正確
  SSN = SSN.replace(/\s+/g, "");
  flag = /^[A-Z]{1}[1-2]{1}[0-9]{8}$/.test(SSN);
  if (!flag) return false;

  // 驗證運算是否正確
  var local_table = [10,11,12,13,14,15,16,17,34,18,19,20,21,
                     22,35,23,24,25,26,27,28,29,32,30,31,33];
                 /* A, B, C, D, E, F, G, H, I, J, K, L, M,
                    N, O, P, Q, R, S, T, U, V, W, X, Y, Z */

  var local_digit = local_table[SSN.charCodeAt(0)-'A'.charCodeAt(0)];

  var checksum = 0;

  checksum += Math.floor(local_digit / 10);
  checksum += (local_digit % 10) * 9;

  /* i: index; p: permission value */
  /* this loop sums from [1] to [8] */
  /* permission value decreases */

  for (var i=1, p=8; i <= 8; i++, p--)
  {
    checksum += parseInt(SSN.charAt(i)) * p;
  }

  checksum += parseInt(SSN.charAt(9));    /* add the last number */

  if ((checksum % 10) != 0)
    return false;
  else
    return true;
}

Utils.isTaxID = function(TaxID)
{
   var tmp = new String("12121241");
   var sum = 0;
   re = /^\d{8}$/;
   if (!re.test(TaxID)) {
       return false;
    }
   for (i=0; i< 8; i++) {
     s1 = parseInt(TaxID.substr(i,1));
     s2 = parseInt(tmp.substr(i,1));
     // sum += cal(s1 * s2);

     var tsum = s1 * s2;
     var c = 0;
     while (tsum != 0) {
      c += tsum % 10;
      tsum = (tsum - tsum % 10) / 10;
     }

     sum += c;
   }
   if (sum % 10 != 0)
   {
    if (TaxID.substr(6, 1) == "7") return sum+1 % 10 == 0 ? true : false;
   }
   return sum % 10 == 0 ? true : false;
}

Utils.isNumber = function(val)
{
  var reg = /^[\d|\.|,]+$/;
  return reg.test(val);
}

Utils.isInt = function(val)
{
  if (val == "")
  {
    return false;
  }
  var reg = /\D+/;
  return !reg.test(val);
}

Utils.isEmail = function( email )
{
  var reg1 = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/;

  return reg1.test( email );
}

Utils.isTel = function ( tel )
{
  var reg = /^[\d|\-|\s|\_]+$/; // 只允許使用數字、空格、-

  return reg.test( tel );
}

Utils.fixEvent = function(e)
{
  var evt = (typeof e == "undefined") ? window.event : e;
  return evt;
}

Utils.srcElement = function(e)
{
  if (typeof e == "undefined") e = window.event;
  var src = document.all ? e.srcElement : e.target;

  return src;
}

Utils.isTime = function(val)
{
  var reg = /^\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}$/;

  return reg.test(val);
}

// 目前的滑鼠 X 座標
Utils.x = function(e)
{
    return Browser.isIE?event.x + document.documentElement.scrollLeft - 2:e.pageX;
}

// 目前的滑鼠 Y 座標
Utils.y = function(e)
{
    return Browser.isIE?event.y + document.documentElement.scrollTop - 2:e.pageY;
}

Utils.request = function(url, item)
{
	var sValue=url.match(new RegExp("[\?\&]"+item+"=([^\&]*)(\&?)","i"));
	return sValue?sValue[1]:sValue;
}

Utils.$ = function(name)
{
  return document.getElementById(name);
}

function rowindex(tr)
{
  if (Browser.isIE)
  {
    return tr.rowIndex;
  }
  else
  {
    table = tr.parentNode.parentNode;
    for (i = 0; i < table.rows.length; i ++ )
    {
      if (table.rows[i] == tr)
      {
        return i;
      }
    }
  }
}

document.getCookie = function(sName)
{
  // cookies are separated by semicolons
  var aCookie = document.cookie.split("; ");
  for (var i=0; i < aCookie.length; i++)
  {
    // a name/value pair (a crumb) is separated by an equal sign
    var aCrumb = aCookie[i].split("=");
    if (sName == aCrumb[0])
      return decodeURIComponent(aCrumb[1]);
  }

  // a cookie with the requested name does not exist
  return null;
}

document.setCookie = function(sName, sValue, sExpires)
{
  var sCookie = sName + "=" + encodeURIComponent(sValue);
  if (sExpires != null)
  {
    sCookie += "; expires=" + sExpires;
  }

  document.cookie = sCookie;
}

document.removeCookie = function(sName,sValue)
{
  document.cookie = sName + "=; expires=Fri, 31 Dec 1999 23:59:59 GMT;";
}

function getPosition(o)
{
    var t = o.offsetTop;
    var l = o.offsetLeft;
    while(o = o.offsetParent)
    {
        t += o.offsetTop;
        l += o.offsetLeft;
    }
    var pos = {top:t,left:l};
    return pos;
}

function cleanWhitespace(element)
{
  var element = element;
  for (var i = 0; i < element.childNodes.length; i++) {
   var node = element.childNodes[i];
   if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
     element.removeChild(node);
   }
}

Date.prototype.setISO8601 = function (string) {
    var regexp = "([0-9]{4})([-/]([0-9]{2})([-/]([0-9]{2})" +
        "( ([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?" +
        "( |(([-+])([0-9]{2}):([0-9]{2})))?)?)?)?";
    var d = string.match(new RegExp(regexp));

    var offset = 0;
    var date = new Date(d[1], 0, 1);

    if (d[3]) { date.setMonth(d[3] - 1); }
    if (d[5]) { date.setDate(d[5]); }
    if (d[7]) { date.setHours(d[7]); }
    if (d[8]) { date.setMinutes(d[8]); }
    if (d[10]) { date.setSeconds(d[10]); }
    if (d[12]) { date.setMilliseconds(Number("0." + d[12]) * 1000); }
    if (d[14]) {
        offset = (Number(d[16]) * 60) + Number(d[17]);
        offset *= ((d[15] == '-') ? 1 : -1);
    }

    offset -= date.getTimezoneOffset();
    time = (Number(date) + (offset * 60 * 1000));
    this.setTime(Number(time));
}