/**
 +----------------------------------------------------------
 *网店通用函数
 *
 +----------------------------------------------------------
 *包含对象：  Browser--浏览器类型
 *			NKcommon-----通用函数对象
 +----------------------------------------------------------
 *功能函数： 
 +----------------------------------------------------------
 */

/**
 *浏览器
 */
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);


/*===============================通用类===============================*/
/**
 *通用类
 */
var NKcommon = {};

/**
 * 跳转
 */
NKcommon.goto = function(url){
		 location.href = url;
}

/**
 * 跳转提示
 */
NKcommon.gotoUrl = function(url,msg){
		 if(confirm(msg)){
			location.href = url;
		 }//if
}

/**
 * 跳转提示
 */
NKcommon.checkAll = function(url,msg){
		 if(confirm(msg)){
			location.href = url;
		 }//if
}

//页面刷新
NKcommon.refresh = function(location){
		 if(location=="top"){
			    window.parent.main_top.location.reload();
		 }//if
	     else if(location=="left"){
			     window.parent.main_left.location.reload();
		 }//elseif
		 else if(location=="right"){
			     window.parent.main_right.location.reload();
		 }//elseif
		 else{
			  window.location.reload();
		 }//elseif
}

/**
 *html特殊符号转换
 */
NKcommon.htmlEncode = function(text)
{
  return text.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}

/**
 *特殊字符过滤
 */
NKcommon.trim = function( text )
{
  if (typeof(text) == "string")
  {
    return text.replace(/^\s*|\s*$/g, "");
  }
  else
  {
    return text;
  }
}

/**
 *判断变量是否为空
 */
NKcommon.isEmpty = function( val )
{
  switch (typeof(val))
  {
    case 'string':
      return NKcommon.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;
  }
}

/**
 *判断变量是否为数字类型
 */
NKcommon.isNumber = function(val)
{
  var reg = /^[\d|\.|,]+$/;
  return reg.test(val);
}

/**
 *判断变量是否为int类型
 */
NKcommon.isInt = function(val)
{
  if (val == "")
  {
    return false;
  }
  var reg = /\D+/;
  return !reg.test(val);
}

/**
 *email验证
 */
NKcommon.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 );
}

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

  return reg.test( tel );
}

/**
 *事件匹配
 */
NKcommon.fixEvent = function(e)
{
  var evt = (typeof e == "undefined") ? window.event : e;
  return evt;
}

/**
 *返回触发函数的元素
 */
NKcommon.srcElement = function(e)
{
  if (typeof e == "undefined") e = window.event;
  var src = document.all ? e.srcElement : e.target;//document.all 仅ie内核可用-----e.target用于火狐

  return src;
}

/**
 *时间验证
 */
NKcommon.isTime = function(val)
{
  var reg = /^\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}$/;

  return reg.test(val);
}


/**
 *捕获鼠标x坐标
 */
NKcommon.x = function(e)
{ //当前鼠标X坐标
    return Browser.isIE?event.x + document.documentElement.scrollLeft - 2:e.pageX;
}

/**
 *捕获鼠标y坐标
 */
NKcommon.y = function(e)
{ //当前鼠标Y坐标
    return Browser.isIE?event.y + document.documentElement.scrollTop - 2:e.pageY;
}

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

/**
 *获得指定元素byId
 */
NKcommon.$ = function(name)
{
    return document.getElementById(name);
}









/*===============================其他方法===============================*/
/**
 *获得当前单元格所在行
 */
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;
      }
    }
  }
}

/**
 *获得指定cookie
 */
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;
}

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

  document.cookie = sCookie;
}

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

/**
 *获得元素所在位置
 */
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;
}

/**
 *清除对象文本框中的空格
 */
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);
   }
}