//验证邮件地址
function valid_email(mailaddr){
	var myReg = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/i;
	if(myReg.test(mailaddr))
		return true;
	else
		return false;
}
//验证日期合法性
function valid_date(year, month, day){
	if(year==""){
		return false;
		}
	if (month < 1 || month > 12) {
            return false;
        }
        if (day < 1 || day > 31) {
            return false;
        }
        if ((month == 4 || month == 6 || month == 9 || month == 11) &&
            (day == 31)) {
            return false;
        }
        if (month == 2) {
            var leap = (year % 4 == 0 &&
               (year % 100 != 0 || year % 400 == 0));
            if (day>29 || (day == 29 && !leap)) {
                return false;
            }
        }
        return true;
}
//验证网址
function valid_url(url){
	//var myReg = /(http[s]?|ftp):\/\/[^\/\.]+?\..+\w$/i;
	//if(myReg.test(url))
		return true;
	//else
	//	return false;
}
function valid_number(number1){
	var reg2=new RegExp("\\d+$","g");
	return (reg2.test(number1))
}