看看这段网页代码！（javascript）
悬赏分：5 -
解决时间：2007-8-18 06:39if(name_main.length==0)
{
alert("输入有错误！用户名不能为空！");
}
else if(password_main.length<6)
{
alert("输入有错误！您输入的密码不能小于6位!");
}
else if(password_main.indexOf("*",0)==0)
{
alert("输入有错误！您输入的密码不能包含*!");
}
else if(password_main.indexOf("''",0)==0)
{
alert("输入有错误！您输入的密码不能包含''!");
}
else if(password_main2!=password_main)
{
alert("输入有错误！您输入的用户名不相等！");
}
else if(question_main.length==0)
{
alert("输入有错误！您输入的密码问题为空！");
}
else if(result_main.length==0)
{
alert("输入有错误！您输入的密码答案为空！");
}
else if(email_main.indexOf("@",0)==-1)
{
alert("输入有错误！您输入的邮箱地址必须包括@！");
}
else if(email_main.indexOf(".",0)==-1)
{
alert("输入有错误！您输入的邮箱地址必须包括.！");
}
else if(document.form1.sex[0].checked==1)
{
sex="男";
}
else if(document.form1.sex[1].checked==1)
{
sex="女";
}
else
{
document.write("<h1>恭喜您！您注册成功！一下是您的注册信息：</h1><br>用户名:"+name_main+"<br>"+"密码:"+password_main+"<br>"+"性别:"+sex+"<br>"+"密码问题:"+question_main+"<br>"+"密码答案:"+result_main+"<br>"+"email:"+email_main+"<br>");
}
----------------------------------------------------------------
为什么运行后
else
{
document.write("<h1>恭喜您！您注册成功！一下是您的注册信息：</h1><br>用户名:"+name_main+"<br>"+"密码:"+password_main+"<br>"+"性别:"+sex+"<br>"+"密码问题:"+question_main+"<br>"+"密码答案:"+result_main+"<br>"+"email:"+email_main+"<br>");
}这段显示不出来？？？？？？
是语法错误？
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Body art from the West, male body is mainly a reflection of the strength of the United States. While the female body is mainly a reflection of the kind of a female-specific negative of tender. 
Body art is static human form, does not contain sexual intercourse is exposed genitals or other
to tease
of limb movements. Good photographs focus on the human body is the use of light and shadow. The body was 
naked from the arts, the human body art is not
carnal desire
, vulgar. Accurately speaking, and now, the "body art" is not very precise. Art classification is based on the auditory,
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