window.onload = function(){
 var usernameObj = document.getElementById("username");
 var passwordObj = document.getElementById("password");
 var repasswordObj = document.getElementById("repassword");
  var emailObj = document.getElementById("email");
    var imgcodeObj = document.getElementById("imgcode");

 
 usernameObj.onblur = checkUsername;
 passwordObj.onblur = checkpassword;
 repasswordObj.onblur=checkrepassword;
 emailObj.onblur=checkemail;
  imgcodeObj.onblur=checkeimgcode;
 
 function checkUsername(){
   var usernameValue = trim(usernameObj.value);
   var usernameRegex = /^[a-zA-Z_]\w{5,19}$/;
   var msg ="<img src='./css/ok.gif'>";
   if(usernameValue == null || usernameValue == "")
    msg ="<img src='./css/err.gif'><font color='red'>用户不能为空!</font>";
   else if(!usernameRegex.test(usernameValue))
    msg ="<img src='./css/err.gif'><font color='red'>由5-20位数字、字母、下划线组成</font>";
    else {
	var myurl=location.protocol+"//"+location.hostname+"/CheckUser.asp?username="+usernameValue;
	
   
   //开始创建
    if (window.ActiveXObject) 
    { 
     objXml = new ActiveXObject("Microsoft.XMLHTTP"); 
     } 
    else if (window.XMLHttpRequest) 
    { 
objXml = new XMLHttpRequest(); 
} 



objXml.open("GET", myurl, false); 
objXml.send(null);


objXml.onreadystatechange = handleStateChange;



function handleStateChange() 
{ 
if (objXml.readyState == 4) 
{ 
if (objXml.status == 200) 
handleResult(); 
} 
} 

 var myurl2=objXml.responseText; 
 var myurl3=objXml.status; 
   //结束
 
 
	msg=myurl2;
	}
	
 
	
   var span = document.getElementById("usernameSpan");
   span.innerHTML = msg;
  
  }
  
  
  //checkpassword开始
  function checkpassword(){
   var passwordValue = passwordObj.value;
   var passwordRegex = /^\w{6,16}$/;
   var msg ="<img src='./css/ok.gif' >"; //
    var box=$('#strength');
   if (!passwordValue)
    msg = "<img src='./css/err.gif'><font color='red'>密码不能为空!</font>";
	
	
	if (passwordValue==''||passwordValue==null)
				box.removeClass().addClass('nothing').text('密码没有填写');
			
			
   else if (!passwordRegex.test(passwordValue)) {
	
     msg = "<img src='./css/err.gif'><font color='red'>密码由6-16个数字、字母、下划线组成</font>";
     //alert(msg);
    }
	
	
	 if (passwordValue.length<6)
				box.removeClass().addClass("nothing").text("密码过短");
	else   {
			  var score=passwordGrade(passwordValue);
				if (score<11)
					box.removeClass().addClass('nothing').text('不安全');
				else if (score<21)
					box.removeClass().addClass('strength normal').text('安全程度：低');
				 else if (score<31)
					box.removeClass().addClass('strength general').text('安全程度：中');
				 else if (score>30)
					box.removeClass().addClass('strength special').text('安全程度：高');
				
			}
	
   var span = document.getElementById("passwordSpan");
   span.innerHTML = msg;
 
  }
  
  
  
  function checkrepassword(){
   var repasswordValue = repasswordObj.value;
   var passwordValue = passwordObj.value;
   var msg ="<img src='./css/ok.gif'>";
   if (!repasswordValue)
    msg = "<img src='./css/err.gif'><font color='red'>请再输入一次密码!</font>";
	
   else if (repasswordValue != passwordValue)
    msg = "<img src='./css/err.gif'><font color='red'>密码必须一致!</font>";
  
   var span = document.getElementById("confirmSpan");
  
   span.innerHTML = msg;
    
 
  }
  
  
  function checkemail()
  {
  var emailObjValue = emailObj.value;
   var emailRegex = /^[\w-]+@([\w-]+\.)+[a-zA-Z]{2,3}$/;
   var msg ="<img src='./css/ok.gif'>";
   if(!emailObjValue)
      msg = "<img src='./css/err.gif'><font color='red'>Email必须填写!</font>";
   else if(!emailRegex.test(emailObjValue))
      msg = "<img src='./css/err.gif'><font color='red'>Email格式不正确!</font>";
   else  {
	var myurl=location.protocol+"//"+location.hostname+"/Checkemail.asp?email2="+emailObjValue;
	
   
   //开始创建
    if (window.ActiveXObject) 
    { 
     objXml = new ActiveXObject("Microsoft.XMLHTTP"); 
     } 
    else if (window.XMLHttpRequest) 
    { 
objXml = new XMLHttpRequest(); 
} 



objXml.open("GET", myurl, false); 
objXml.send(null);


objXml.onreadystatechange = handleStateChange;



function handleStateChange() 
{ 
if (objXml.readyState == 4) 
{ 
if (objXml.status == 200) 
handleResult(); 
} 
} 

 var myurl2=objXml.responseText; 
 var myurl3=objXml.status; 
   //结束
 
 
	msg=myurl2;
	}
   
   
   var span = document.getElementById("emailSpan");
  
   span.innerHTML = msg;
  
  }
  
  
  function checkeimgcode()
  {
   var imgcodeValue = imgcodeObj.value;
   var msg ="<img src='./css/ok.gif'>";
   if(!imgcodeValue)
      msg = "<img src='./css/err.gif'><font color='red'>请输入验证码!</font>";

	   else if (imgcodeValue != )
    msg = "<img src='./css/err.gif'><font color='red'>与验证码不一致!</font>";
   var span = document.getElementById("reg_code");
   span.innerHTML = msg;
   
  }
  
   
  
 
  
  function trim(s){
   return s.replace(/^\s+|\s+$/g,"");
  }



}