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var xmlHttp = false;
try{
  xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
catch (e){
try{
    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  }
catch (e2)
{
    xmlHttp = false;
  }
}
if (!xmlHttp && typeof XMLHttpRequest != 'undefined'){
  xmlHttp = new XMLHttpRequest();
}
function callServer(){
  var u_name = document.getElementById("TextBox1").value;
  if ((u_name == null) || (u_name == "")) return;
  var url = "Validate.aspx?UserName=" + escape(u_name);
  xmlHttp.open("GET", url, true);
  xmlHttp.onreadystatechange = updatePage;
  xmlHttp.send(null); 
}
function updatePage(){
  if (xmlHttp.readyState < 4){
test1.innerHTML="loading...";
  }
  if (xmlHttp.readyState == 4){
    var response = xmlHttp.responseText;
test1.innerHTML=response;
  }
}


string nam = Request.QueryString["UserName"].ToString();
        if(nam=="1")
        {
            Response.Write("´ËÓû§ÃûÒѾ­±»×¢²á"); <


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function checkSysConfig()
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