function isEmail(strEmail) {   
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)   
return true;   
else  
return false;   
}  

function isZip(strZip)
{
  if (strZip.search(/^[1-9]\d{5}$/)!=-1)
  return true;
  else
  return false;
}
function isQQ(strQQ)
{
   if (strQQ.search(/^[1-9]\d{4,8}$/)!=-1)
  return true;
  else
  return false;
}
function isInteger(strInt)
{
   if (strInt.search(/^[-\+]?\d+$/)!=-1)
  return true;
  else
  return false;
}
function isDouble(strDouble)
{
   if (strDouble.search(/^[-\+]?\d+(\.\d+)?$/)!=-1)
  return true;
  else
  return false;
}
function isEnglish(strEnglish)
{
   if (strEnglish.search(/^[A-Za-z]+$/)!=-1)
  return true;
  else
  return false;
}
function isChinese(strChinese)
{
  if (strChinese.search(/^[\u0391-\uFFE5]+$/)!=-1)
  return true;
  else
  return false;
}
function isUsername(strUsername)
{
   if (strUsername.search(/^[a-z]\w{3,}$/i)!=-1)
  return true;
  else
  return false;
}
function isMoney(strMoney)
{
   if (strMoney.search(/^\d+(\.\d+)?$/)!=-1)
  return true;
  else
  return false;
}
function isIP(strIP)
{
   if (strIP.search(/^((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.){3}(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])$/)!=-1)
  return true;
  else
  return false;
}
function isPhone(strPhone)
{
    if (strPhone.search(/\w/)!=-1)
  return true;
  else
  return false;
}
function isDate(str)
{
	var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); 
	if(r==null)return false; 
	var d= new Date(r[1], r[3]-1, r[4]); 
	return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}

//长时间，形如 (2003-12-05 13:04:06)
function isDateTime(str)
{
	var reg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/; 
	var r = str.match(reg); 
	if(r==null) return false; 
	var d= new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]); 
	return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7]);
}
function isMobile(str)
{
   if (str.search(/^(13|15|18)[0-9]{9}$/)!=-1)
  return true;
  else
  return false;
}
function IsIdCard(idcard){
		var area={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"}  
var idcard,Y,JYM; 
var S,M; 
var idcard_array = new Array(); 
idcard_array = idcard.split(""); 
if(area[parseInt(idcard.substr(0,2))]==null) return false; 
switch(idcard.length){ 
case 15: 
if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){ 
ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性 
} else { 
ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性 
} 
if(ereg.test(idcard)) return true; 
else return false; 
break; 
case 18: 
if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){ 
ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/;//闰年出生日期的合法性正则表达式 
} else { 
ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/;//平年出生日期的合法性正则表达式 
} 
if(ereg.test(idcard)){
S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7 
+ (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9 
+ (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10 
+ (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5 
+ (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8 
+ (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4 
+ (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2 
+ parseInt(idcard_array[7]) * 1  
+ parseInt(idcard_array[8]) * 6 
+ parseInt(idcard_array[9]) * 3 ; 
Y = S % 11; 
M = "F"; 
JYM = "10X98765432"; 
M = JYM.substr(Y,1);
if(M == idcard_array[17]) return true; 
else return false; 
} 
else return false; 
break; 
default: 
return false; 
break; 
} 
	}