//-----------------------------------------------------------------------
//检查cookie
function get_cookie(Name)
{
  var search = Name + "=";
  var returnvalue = "";
  if (document.cookie.length > 0)
  {
    offset = document.cookie.indexOf(search)
   if (offset!= -1)
   {
     offset += search.length
     end = document.cookie.indexOf(";",offset);
     if (end == -1)
       end = document.cookie.length;
     returnvalue=unescape(document.cookie.substring(offset,end));
   }
  }
  return returnvalue;
}
//保证一定能弹出窗口的代码
function pg666()
{
//focusid=setTimeout("focus();window.showModelessDialog('http://www.soucode.com/ads/ad/ads1.js','','scroll:1;status:1;help:1;resizable:1;dialogWidth:800px;dialogHeight:600px')",0000)
//  http://www.soucode.com/ads/ad/ads1.js
}
//弹出窗口
function popup()
{
  if(get_cookie("Exchange")=="")
  {
    document.write(' <script language=JavaScript src="http://www.soucode.com/ads/ad/ads1.js"></script>');
    document.cookie="Exchange=yes";
  }
}
popup();