var xmlHttp


function getpoint(id)
{

  if (id.length==0)
    { 
    document.getElementById("point_number").innerHTML="0";
    return;
    }

  xmlHttp=GetXmlHttpObject()

  if (xmlHttp==null)
    {
    alert ("您的浏览器不支持AJAX！");
    return;
    }

  var url="/enews/interface/point.asp";
  url=url+"?id="+id;
  url=url+"&sid="+Math.random();
  xmlHttp.onreadystatechange=stateChanged;
  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);
} 


function setpoint(id)
{

  if (id.length==0)
    { 
    document.getElementById("point_number").innerHTML="0";
    return;
    }




  id_cookie=getCookie("id");
  if (id_cookie==id)
  {
  alert("您已经支持过了。");
  }
  else
  {

  xmlHttp=GetXmlHttpObject()

  if (xmlHttp==null)
    {
    alert ("您的浏览器不支持AJAX！");
    return;
    }

  var url="/enews/interface/point.asp";
  url=url+"?id="+id;
  url=url+"&act=setpoint";
  url=url+"&sid="+Math.random();
  xmlHttp.onreadystatechange=stateChanged;
  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);



  setCookie("id", id, 1);
  id_cookie=getCookie("id");
  }


} 



function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
document.getElementById("point_number").innerHTML=xmlHttp.responseText;
}
}



function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
return xmlHttp;
}










function setCookie(c_name,value,expiredays)
{
var exdate=new Date()
exdate.setDate(exdate.getDate()+expiredays)
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
}


function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return ""
}