function SelectTabItem(selectitem,tabname,itemname)
{
   tabs=document.all[tabname];
    for(i=0;i<tabs.length;i++)
    {
       tabs[i].className=tabname;
    }
    
    selectedClassName=tabname+"Selected";
    selectitem.className=selectedClassName;
    items=document.all[itemname];
    for(i=0;i<tabs.length;i++)
    {
       
       if(tabs[i].className==selectedClassName)
       {
           items[i].style.display="";
       }else{
           items[i].style.display="none";
       }
    }
    //getElementById
}


function GetRss(url,maxlist,showtext,islocal)
{
 var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
 xmlDoc.async="false";
 var realUrl=url;
 if(!islocal)
 {
 realUrl="/GetRss.ashx?url="+url
 }
 xmlDoc.load(realUrl);
 /*读取远程xml数据源,可以使用本地数据源,但要以index.html为基点,
 这里应该写为index.html在http://7thpark.com/06/下面，所以为../parklog/rss.xml*/
 var nodes=null;
 nodes = xmlDoc.selectNodes("/rss/channel/item");//读取节点,筛选节点最低端用item[title='xxx']或者//last
 if(nodes==null)
  var returnHtml = "没有可载入的数据......";
 
 else
 {
  returnHtml = "<ul>";
  maxlength=nodes.length;
  if(maxlength>maxlist)//控制列表长度
   maxlength=maxlist;//控制列表长度
  for(i=0;i<maxlength;i++){
   returnHtml +="<li>";
   returnHtml +="<a href='" + nodes[i].selectSingleNode("link").text + "' target='_blank'>" + nodes[i].selectSingleNode("title").text + "</a>";
   if(showtext)
   {
   returnHtml +="<div>"+nodes[i].selectSingleNode("description").text+"</div>";
   }
   returnHtml +="</li>";
  }
  returnHtml += "</ul>";
 }
 document.write(returnHtml);
}