window.onload=function()
{G("email").style.color="#AAAAAA";G("email").value="如果有QQ邮箱,建议使用QQ邮箱";G("email").onfocus=function()
{if(G("email").value.trim()=="如果有QQ邮箱,建议使用QQ邮箱")
{G("email").style.color="#000000";G("email").value="";}}}
function check()
{var user=G("user").value.trim();var email=G("email").value.trim();var pass=G("pass").value.trim();var pass2=G("pass2").value.trim();var imType=G("imType");var im=G("im").value.trim();if(user=="")
{alert("请输入用户名！");G("user").focus();return false;}
else if(pass=="")
{alert("请输入密码！");G("pass").focus();return false;}
else if(pass2=="")
{alert("请输入确认密码！");G("pass2").focus();return false;}
else if(pass!=pass2)
{alert("密码与确认密码输入不同，请重新输入！");G("pass").focus();return false;}
else if(email==""||email=="如果有QQ邮箱,建议使用QQ邮箱")
{alert("请输入你的电子邮件！");G("email").style.color="#000000";G("email").value="";G("email").focus();return false;}
else if(!isEmail(email))
{alert("电子邮件格式输入有误，请重新输入！");G("email").focus();return false;}
else if(im=="")
{if(imType.selectedIndex==0)
{alert("请输入您的淘宝会员号！");}
else
{alert("请输入您的QQ号！");}
G("im").focus();return false;}
else
{return true;}}
function existUser()
{var user=G("user").value.trim();if(user=="")
{alert("请输入一个用户名！");G("user").focus();}
else
{redirect("existUser.asp?user="+encodeURIComponent(user));}
return false;}
var http_request;function redirect(url)
{if(http_request==null)
{http_request=getHttpRequest();}
if(!http_request)
{alert("XMLHttpRequest 初始化失败!");}
else
{http_request.open("GET",url,true);http_request.onreadystatechange=updatePage;http_request.send(null);}
return false;}
function updatePage()
{if(http_request.readyState==4)
{if(http_request.status==200)
{if(!isEmptyStr(http_request.getResponseHeader("msg")))
{alert(decodeURI(http_request.getResponseHeader("msg")));}}
else
{alert("错误：\n"+http_request.responseText);}}}