/* $Id : utils.js 5052 2007-02-03 10:30:13Z weberliu $ */

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

Utils.isInt = function(val)
{
  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.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}:\d{2}$/;

  return reg.test(val);
}

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


  // new js function to check postcode by wesley 23/06/2007

 Utils.invalid_pcode = function( val )
{

  //not null
  if (Utils.isEmpty(val))
  {
	  return true;
  }
  //all number
  if (!Utils.isNumber(val))
  {
	  return true;
  }
  // all int
  if (!Utils.isInt(val))
  {
	  return true;
  }
  //only four digits
  else {
	  return false;
  }

}


  Utils.invalid_pcode = function( val )   
  {   
	if (Utils.isEmpty(val) )
    {   
		return true;  

    }   
	if   (val.length  != 4 )
    {   

		return true;  
    }       
  
	var   checkOK   =   "0123456789";   
    var   checkStr   =   val;   
    var   allValid   =   true;   
    for   (i   =   0;     i   <   checkStr.length;     i++)   
    {   
          ch   =   checkStr.charAt(i);   
          for   (j   =   0;     j   <   checkOK.length;     j++)   
              if   (ch   ==   checkOK.charAt(j))   
                  break;   
          if   (j   ==   checkOK.length)   
          {   
              allValid   =   false;   
              break;   
          }   
    }   
    if   (!allValid)   
    {   
		return true; 
    }  

  }
//end check postcode