function checkuser()
{
	var uid=document.getElementById("us_uid").value;
	var pwd=document.getElementById("us_pwd").value;
	str=Aj_post("us_uid="+uid+"&us_pwd="+pwd+"&ac=check","UsInfo","us_uid_msg");
	return str;
}

function str_edit()
{
str=Aj_get("tt","");
str_frm_obj("us_regis","modi",str);
}

function reg_post()
{
   if(checkuser()!="")
   {
	document.getElementById("us_uid").focus();  
	return;
	}
   if(str_frm_obj("us_regis","add","").substr(0,3)=="err")
   {
	 return;
   }
	var f_str=str_frm_obj("us_regis","add","");
	var p_str=f_str+"ac=add";
	var bk_str=Aj_post(p_str,"UsInfo","");
	if(bk_str=="true")
	{
		location.href="main.aspx";
	}
	else
	{
		alert(bk_str);	
	}
}

function CheckUserLogin()
{
	var str=str_frm_obj("us_login","add","");
	if(str.substr(0,3)=="err")
	 {
		 return;
	}
	var bk_str=Aj_post(str+"ac=checkpass","UsInfo","");
	if(bk_str!="true")
	{
		alert("用户名或密码输入有误");
		document.getElementById("lg_uid").select();
		document.getElementById("lg_pwd").value="";
		return;
	}
	else
	{
		location.href="main.aspx";
	}
}