//去左右空格 add by yang
function trim(str)
{
    str += "";
    while ((str.charAt(0) == ' ') || (str.charAt(0) == '　') || (escape(str.charAt(0)) == '%u3000')) 
        str = str.substring(1, str.length);
    while ((str.charAt(str.length - 1) == ' ') || (str.charAt(str.length - 1) == '　') || (escape(str.charAt(str.length - 1)) == '%u3000')) 
        str = str.substring(0, str.length - 1);
    return str;
}

//检查E-mail add by yang
function isEmail(s) {
	if (s.length > 100)	return false;
	if (s.indexOf("'")!=-1 || s.indexOf("/")!=-1 || s.indexOf("\\")!=-1 || s.indexOf("<")!=-1 || s.indexOf(">")!=-1) return false;
    s = s.replace('(', '');
    s = s.replace(')', '');
    s = s.replace('（', '');
    s = s.replace('）', '');

	var regu = "^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[_.0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([^\.]+)$";

	var result=true;
	var arrayStr = s.split(";");
	var i = 0;
	for (;i<arrayStr.length;i++){
		if (s.charAt(0)==" "){
			result=false;
			break;
		}
		if (s.charAt(s.length-1)==" "){
			result=false;
			break;
		}
		var re = new RegExp(regu);
		if (arrayStr[i].search(re) == -1){
			result=false;
			break;
		}
	}
	return result;
}

//校验手机号码：必须以数字开头，除数字外，可含有“-” add by yang
function isMobil(s)
{
var patrn=/^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;
if (!patrn.exec(s)) return false
return true
}

//校验是否全由数字组成 add by yang
function isDigit(s)
{
var patrn=/^[0-9]{1,20}$/;
if (!patrn.exec(s)) return false
return true
}

function ShowTime(obj)//显示时间 
{
    var now_time = new Date();
    var years = now_time.getFullYear();
    var months = now_time.getMonth();
    var dates = now_time.getDate();
    var days = now_time.getDay();
    var today = (months + 1) + "月" + dates + "日";
    var weeks;
    if (days == 0)
        weeks = "星期日";
    if (days == 1)
        weeks = "星期一";
    if (days == 2)
        weeks = "星期二";
    if (days == 3)
        weeks = "星期三";
    if (days == 4)
        weeks = "星期四";
    if (days == 5)
        weeks = "星期五";
    if (days == 6)
        weeks = "星期六";
    var doc = document.getElementById(obj);
    doc.innerHTML = "<span>" + today + "</span>" + "<span>" + weeks+"</span>";
}