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 Common = new Object();
Common.htmlEncode = function(str)
{
	return str.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}

Common.trim = function(str)
{
	return str.replace(/(^\s*)|(\s*$)/g, "");
}

Common.strlen = function (str)
{
	if(Browser.isFirefox)
	{
		Charset = document.characterSet;
	}
	else
	{
		Charset = document.charset;
	}
	if(Charset.toLowerCase() == 'utf-8')
	{
		return str.replace(/[\u4e00-\u9fa5]/g, "***").length;
	}
	else
	{
		return str.replace(/[^\x00-\xff]/g, "**").length;
	}
}

Common.isdate = function (str)
{
   var result=str.match(/^(\d{4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
   if(result==null) return false;
   var d=new Date(result[1], result[3]-1, result[4]);
   return (d.getFullYear()==result[1] && d.getMonth()+1==result[3] && d.getDate()==result[4]);
}

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

Common.isalphanumber = function (str)
{
	var result=str.match(/^[a-zA-Z0-9]+$/);
	if(result==null) return false;
	return true;
}

Common.isint = function(val)
{
    var reg = /\d+/;
    return reg.test(val);
}

Common.isemail = function(email)
{
    var reg = /([\w|_|\.|\+]+)@([-|\w]+)\.([A-Za-z]{2,4})/;
    return reg.test( email );
}

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

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

Common.isdatetime = function(val)
{
	var result=str.match(/^(\d{4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/);
	if(result==null) return false;
	var d= new Date(result[1], result[3]-1, result[4], result[5], result[6], result[7]);
	return (d.getFullYear()==result[1]&&(d.getMonth()+1)==result[3]&&d.getDate()==result[4]&&d.getHours()==result[5]&&d.getMinutes()==result[6]&&d.getSeconds()==result[7]);
}

var set_show = true;