// JScript 文件

var xmlHttp;
var result;

function CreateXMLHttpRequest() 
{
    if (window.ActiveXObject) {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    } 
    else if (window.XMLHttpRequest) 
    {
        xmlHttp = new XMLHttpRequest();
    }
}

function _CheckUserNameRegister(CheckType) {
var RequestUserName = document.getElementById("txtBY_"+CheckType+"_UserName").value;
var url = "../Include/Ajax_CheckUserNameRegister.aspx?types="+CheckType+"&RequestUserName=" + RequestUserName ;
if(RequestUserName=="" || RequestUserName.length<6 || RequestUserName.charAt("0")==" ")
{
	document.getElementById("msg").innerHTML="<font color='red'><b><img src='../images/ico_3.gif'>&nbsp;用户名输入不合法</b></font>"
}
else
{
    CreateXMLHttpRequest();
    xmlHttp.onreadystatechange = Bai0_StateChange;
    xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");
    xmlHttp.Open("POST",url,false);
    xmlHttp.send(null);
    result = xmlHttp.responseText;
    if(result=="0")
    {
        document.getElementById("txtBY_"+CheckType+"_UserName").focus();
        alert("对不起，该用户名系统中已存同名，请重新选择用户名进行注册！");
        document.getElementById("msg").innerHTML="<font color='red'><b><img src='../images/ico_3.gif'>&nbsp;用户名不可注册</b></font>"
    }
    if(result=="1")
    {
        document.getElementById("msg").innerHTML="<font color='green'><b>√&nbsp;用户名可以注册</b></font>"
    }
}
}

//状态检测
function Bai0_StateChange() 
{
    if(xmlHttp.readyState == 4) 
    {
        if(xmlHttp.status == 200) 
        {
            alert(xmlHttp.responseText);
        }
    }
}