function checkinput()
  {
  if (!check_text(userInfoForm.Username,2,10,"用户名")){
		userInfoForm.UserName.focus();
		return false;
	}
    if (!check_text(userInfoForm.MobileNO,5,20,"手机号码")){
		userInfoForm.MobileNO.focus();
		return false;
	}
	
  if (!is_digital(userInfoForm.MobileNO,"手机号码")){
		userInfoForm.MobileNO.focus();
		return false;
	}

 if (!havegg(userInfoForm.Username.value)){
		alert("用户名含有非法字符");
		userInfoForm.Username.focus();
		return false;
  }
	  if (!check_username(userInfoForm.Username.value))
	{	
		userInfoForm.Username.focus();
		return false;
	}
  if (!check_password(userInfoForm.userpwd,userInfoForm.confirmuserpwd,6,15,"用户密码"))
   {
		return false;
	} 
if (!havegg(userInfoForm.userpwd.value)){
		alert("密码含有非法字符");
		userInfoForm.userpwd.focus();
		return false;
  }
if (!check_text(userInfoForm.TelcardPwd,6,6,"投注卡密码"))
	{
		userInfoForm.TelcardPwd.focus();
		return false;
	}  
if (!check_text(userInfoForm.realname,2,8,"真实姓名"))
	{
		userInfoForm.realname.focus();
		return false;
	}	
if (!check_text(userInfoForm.proid,15,20,"身份证号码"))
	{
		userInfoForm.proid.focus();
		return false;
	}	
   if (!havegg(userInfoForm.realname.value)){
		alert("真实姓名中含有非法字符");
		userInfoForm.realname.focus();
		return false;
  }
  if (userInfoForm.CheckCode.value==''){
        alert("请输入验证码");
		userInfoForm.CheckCode.focus();
		return false;
 }  		
if (userInfoForm.choose1.checked!=true){
        alert("请确定已年满18岁");
		userInfoForm.choose1.focus();
		return false;
 }  
if (userInfoForm.choose2.checked!=true){
        alert("请确定已阅读并同意注册条款");
		userInfoForm.choose2.focus();
		return false;
 }  
 	 
 
 
	//alert('准备提交注册信息！');
	 userInfoForm.submit();	
  }
  
  
  //验证用户名是否存在