/* $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)
{
  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 );
}


//互亿无线代码
utils.ismobile = function( mobile )
{
  var reg1 = /^1[3456789][\d]{9}$/;
  var reg2 = /^0[\d]{10,11}$/;

  if (reg1.test( mobile ))
	return true;

  if (reg2.test( mobile ))
	return true;

  return false;
}
//互亿无线代码

utils.istel = function ( tel )
{
  var reg = /^[\d|\-|\s|\_]+$/; //只允许使用数字-空格等

  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);
}

utils.x = function(e)
{ //当前鼠标x坐标
    return browser.isie?event.x + document.documentelement.scrollleft - 2:e.pagex;
}

utils.y = function(e)
{ //当前鼠标y坐标
    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);
   }
}