function Check()
{              
     		if (form1.name.value=="")
               { 
                 alert("请输入姓名!");
                 form1.name.focus();
                 return false;
               }
           if(form1.sex.value=="脛脨")
              {alert("性别有误！"）；
               form1.sex.focus();
               return false;}
           if (form1.age.value=="")
                        {
                        alert("请输入年龄!");
                        form1.age.focus();
                        return false;
                        }         
           if (form1.address.value=="")
                        {
                          alert("请留下您的联系地址!");
                          form1.address.focus();
                          return false;
                        }         
                  
           if (form1.youbian.value=="")
                        {
                          alert("请输入邮政编码!");
                          form1.youbian.focus();
                          return false;
                        }
                   else 
	             {
	   if(form1.youbian.value.length!=6)
		        {
			  alert("您输入的邮编有误！");
                          form1.youbian.focus();
			  return false;
			} 
		 var num="0123456789";
		 var bool=true;
		 for(i=0;i<form1.youbian.value.length;i++)
		     {
			  for(j=0;j<num.length;j++)
			   if(form1.youbian.value.charAt(i)==num.charAt(j))
			      break;
		      if(j==num.length)
			{
				   bool=false;
				   break;
		        }  
	             }
		  if(bool==false)
		       {
			   alert("您输入的邮编有误！");
                           form1.youbian.focus();
			   return bool;
		       }
		        	 
	             }    

 if(form1.tel.value=="")
     {
           alert("请输入联系电话！");
           form1.tel.focus();
           return false;
     } 
  else 
     {     var num="0123456789";
           var bool=true;
	   for(i=0;i<form1.tel.value.length;i++)
		    {
			  for(j=0;j<num.length;j++)
			   if(form1.tel.value.charAt(i)==num.charAt(j))
			      break;
		          if(j==num.length)
			     {
			   bool=false;
			   break;
			     }  
		     }
		  if(bool==false)
		          {
			   alert("您输入的联系电话有误！");
                           form1.tel.focus();
                           return bool;
			  }
		  	   	 
     }	  
     if(form1.email.value=="")
	             {
	                   alert("请输入电子邮件！");
                           form1.email.focus();
	                   return false;
	             }
                      else 
                    { 
	                   for(i=0;i<form1.email.value.length;i++)
                           if(form1.email.value.charAt(i)=='@')
	                   break;
	                   if(i==form1.email.value.length)
	                {
	                  alert("您输入的电子邮件有误！");
                          form1.email.focus();
	                  return false;
	                } 
                    } 

   if(form1.neirong.value=="")
               {
                 alert("请输入线索内容！");
                 form1.neirong.focus();
                 return false;
               }
else
{
if((form1.neirong.value.indexOf ("<a") == 0)||(form1.neirong.value.indexOf ("href") == 0)||(form1.neirong.value.indexOf ("代理") == 0)||(form1.neirong.value.indexOf ("产品信息") == 0)||(form1.neirong.value.indexOf ("www") == 0)||(form1.neirong.value.indexOf ("产品") == 0)||(form1.neirong.value.indexOf ("轴承") == 0)||(form1.neirong.value.indexOf ("旅游") == 0)||(form1.neirong.value.indexOf ("formspring") == 0)||(form1.neirong.value.indexOf ("http") == 0))
{
alert("内容有误，存在非法字符！请不要在此发布广告。");
form1.neirong.value="";
form1.neirong.focus();
return false;}
}	
if(document.form1.zheng.value=="")
{alert("验证码不能为空");
form1.zheng.focus();
return false;}
var e=document.form1.zheng.value;
if(e.match(b))
{return;}
else
{alert("验证码不正确");
form1.zheng.focus();
return false;}
}