function gotoPage(page){
  var pagenow=document.getElementById(page).value;
  var page_now=pagenow.replace(/(^\s*)|(\s*$)/g, "");
  if(!IsNumeric(page_now)) return false;
  var pageCount=document.getElementById("pageCount").value;
  if(page_now-pageCount>0){
    alert("请输入有效页数!");
    return;
  }
  var chagePage=document.getElementById("chagePage").value;
   if(chagePage!=null)
 {
  if(chagePage=="Doc"){
    var groupurl = document.getElementById("groupurl").value;
    window.location.href='http://group.hudong.com/'+groupurl+'/doc/page/'+page_now+'/';
  }
  if(chagePage=="folderDoc"){
    var folder_id_en = document.getElementById("folder_id_en").value;
    window.location.href='http://group.hudong.com/'+groupurl+'/doc/'+folder_id_en+'/'+page_now+'/';
  }
  if(chagePage=="docComment"){
    var dociden = document.getElementById("doc_id_en").value;
    window.location.href='http://group.hudong.com/doccomment/'+dociden+'/'+page_now+"/";
  }
    if(chagePage=="Group"){
    var groupClassId = document.getElementById("group_class_id").value;
    window.location.href='http://group.hudong.com/grouplist/'+groupClassId+'/'+page_now+"/";
  }
    if(chagePage=="topicReply"){
    var topicId = document.getElementById("topic_id").value;
    var grouprul=document.getElementById("group_url").value;
    window.location.href='http://group.hudong.com/'+groupurl+'/bbs/'+topicId+'/page/'+page_now;
  }
    if(chagePage=="topic"){
    var groupurl = document.getElementById("group_url").value;
    window.location.href='http://group.hudong.com/'+groupurl+'/bbs/page/'+page_now+"/";
  }
  if(chagePage=="member"){
     var groupurl = document.getElementById("group_url").value;
     window.location.href='http://group.hudong.com/'+groupurl+'/member/'+page_now+"/";
   }
  }
}

function IsNumeric(port)  
  {  
  var   pattern=/^\d+$/;
  if(port.match(pattern))  
     return true;  
  else 
     alert("请输入有效数字!");   
  return  false;  
  }   
//checkbox反选
function reverseSelect(tagName)
{
  var checks=document.getElementsByName(tagName);
   for(i=0; i<checks.length; i++){
     checks[i].checked=!checks[i].checked;
  }
}