document.write(
String.prototype.Trim = function()
{
    return this.replace(/(^\s*)|(\s*$)/g, "");
}
)
document.write(
function fuwei() {
    document.getElementById("username").value="";
    document.getElementById("psw").value="";
	gxyzm();
}
)
document.write(
function checkuser() {
	if (document.getElementById("username").value.Trim() == "")
	{
		alert("帐号不能为空！");
		document.getElementById("username").focus();
		return false;
	}

	if (document.getElementById("psw").value.Trim() == "")
	{
		alert("密码不能为空！");
		document.getElementById("psw").focus();
		return false ;
	}
	if (document.getElementById("psw").value.length <= 5)
	{
		alert("密码长度太短！");
		document.getElementById("psw").focus();
		return false ;
	}
	if (document.getElementById("yzm").value.Trim() == "")
	{
		alert("验证码不能为空！");
		document.getElementById("yzm").focus();
		return false ;
	}
    var regstr = "username=" + escape(document.getElementById("username").value);
    regstr=regstr+"&psw=" + escape(document.getElementById("psw").value);
    regstr=regstr+"&yzm=" + escape(document.getElementById("yzm").value);
    var oBao = new ActiveXObject("Microsoft.XMLHTTP");
    oBao.open('POST','/stadmin/checklogin.aspx',false);
	oBao.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    oBao.send(regstr);
    if (unescape(oBao.responseText)==0){
	    top.location="/STAdmin/admin_index.aspx";
        return ;
    }
    if (unescape(oBao.responseText)==1){
		alert("帐号不能为空！");
		gxyzm();
        return ;
    }
    if (unescape(oBao.responseText)==2){
		alert("密码不能为空！");
		gxyzm();
        return ;
    }
    if (unescape(oBao.responseText)==3){
		alert("你输入的验证码错误！");
		gxyzm();
        return ;
    }
    if (unescape(oBao.responseText)==4){
		alert("帐户不存在！");
		document.getElementById("username").value="";
		gxyzm();
		document.getElementById("username").focus();
        return ;
    }
    if (unescape(oBao.responseText)==5){
		alert("该用户已被管理员禁用！");
		document.getElementById("username").value="";
		gxyzm();
		document.getElementById("username").focus();
        return ;
    }
    if (unescape(oBao.responseText)==6){
		alert("密码错误！");
		document.getElementById("psw").value="";
		gxyzm();
		document.getElementById("psw").focus();
        return ;
    }
    if (unescape(oBao.responseText)==7){
		alert("对不起验证码已经超时！");
		//document.getElementById("username").value="";
		gxyzm();
        return ;
    }
    if (unescape(oBao.responseText)==10){
		alert("欢迎使用DD_WebMS！\n请与我联系。QQ:25160456");
        return ;
    }
}
)