通过身份证号得到出生日期和性别的js代码

//身份证校验 与得到生日代码

<script language="javascript"> 
function showBirthday(val) 
{ 
var birthdayValue; 
if(15==val.length) 
{ //15位身份证号码 
birthdayValue = val.charAt(6)+val.charAt(7); 
if(parseInt(birthdayValue)<10) 
{ 
birthdayValue = '20'+birthdayValue; 
} 
else 
{ 
birthdayValue = '19'+birthdayValue; 
} 
birthdayValue=birthdayValue+'-'+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11); 
if(parseInt(val.charAt(14)/2)*2!=val.charAt(14)) 
document.all.sex.value='男'; 
else 
document.all.sex.value='女'; 
document.all.birthday.value=birthdayValue; 
} 
if(18==val.length) 
{ //18位身份证号码 
birthdayValue=val.charAt(6)+val.charAt(7)+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11)+'-'+val.charAt(12)+val.charAt(13); 
if(parseInt(val.charAt(16)/2)*2!=val.charAt(16)) 
document.all.sex.value='男'; 
else 
document.all.sex.value='女'; 
if(val.charAt(17)!=IDCard(val)) 
{ 
document.all.idCard.style.backgroundColor='#ffc8c8'; 
} 
else 
{ 
document.all.idCard.style.backgroundColor='white'; 
} 
document.all.birthday.value=birthdayValue; 
} 
}