//var userAgent = navigator.userAgent.toLowerCase();


var agt = navigator.userAgent.toLowerCase();
var is_opera = agt.indexOf('opera') != -1 && opera.version();
var is_moz = (navigator.product == 'Gecko') && agt.substr(agt.indexOf('firefox') + 8, 3);
var is_ie = (agt.indexOf('msie') != -1 && !is_opera) && agt.substr(agt.indexOf('msie') + 5, 3);

var client_test;

if (document.getElementById)
{ client_test = "a"; }
else if (document.all)
{ client_test = "b"; }
else if (document.layers)
{ client_test = "c"; }

var request = new function()
{
  var iname,ivalue,icount;
  var urlstr = location.href;
  var inum = urlstr.indexOf("?")
  urlstr = urlstr.substr(inum + 1);
  var arrtmp = urlstr.split("&");
  for(icount = 0; icount < arrtmp.length; icount++)
  {
    inum = arrtmp[icount].indexOf("=");
    if(inum > 0)
    {
      iname = arrtmp[icount].substring(0, inum);
      ivalue = arrtmp[icount].substr(inum + 1);
      this[iname] = ivalue;
    }
  }
}

var xmlhttp = function()
{
  var xmlObj = null;
  if(window.XMLHttpRequest){
      xmlObj = new XMLHttpRequest();
  } else if(window.ActiveXObject){
      xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
  } else {
      return;
  }
  return xmlObj;
}

function click_return(strt)
{
  var tmpvar = strt;
  var tmptrue = window.confirm(tmpvar);
  if (tmptrue) { return true; }
  return false;
}

function get_id(strname)
{

  switch (client_test)
  {
	case "a":
      return document.getElementById(strname);
      break;
    case "b":
      return document.layers[strname];
      break;
    default :
      return document.all(strname);
      break;
  }
}

function get_num(strers)
{
  if (isNaN(strers) || strers == "")
  {
    return 0;
  }
  else
  {
    return parseInt(strers);
  }
}


function iget(strers)
{
  var nxmlhttp = new xmlhttp();
  nxmlhttp.open("get", strers, false);
  nxmlhttp.send(null);
  return nxmlhttp.responseText;
}

function igets(strers, callback)
{
  var nxmlhttp = new xmlhttp();
  nxmlhttp.onreadystatechange = function()
  {
    if (nxmlhttp.readyState == 4)
    {
      if (nxmlhttp.status == 200 || nxmlhttp.status == 304)
      {
        callback(nxmlhttp.responseText);
      }
      else
      {
        callback("$error$")
      }
    }
  }
  nxmlhttp.open("get", strers, true);
  nxmlhttp.send(null);
}


function igets_xml(strers, callback)
{
  var nxmlhttp = new xmlhttp();
  nxmlhttp.onreadystatechange = function()
  {
    if (nxmlhttp.readyState == 4)
    {
      if (nxmlhttp.status == 200 || nxmlhttp.status == 304)
      {
        callback(nxmlhttp.responseXML);
      }
      else
      {
        callback("$error$")
      }
    }
  }
  nxmlhttp.open("get", strers, true);
  nxmlhttp.send(null);
}

function itextner(strid, strers)
{
  var tobj;
  tobj = get_id(strid);
  if (is_ie)
  {
    tobj.focus();
    document.selection.createRange().text = strers;
  }
  else
  {
    tobj.focus();
    tobj.value += strers;
  }
}


function nll(strers)
{}

<!-- 
function myFavorite(title,url,desc) 
{ 
if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
//Gecko 
{ 
window.sidebar.addPanel(title,url,desc); 
} 
else
//IE 
{ 
window.external.AddFavorite(url,title); 
} 
} 
//--> 

function onint()
{
}

/*
	[Discuz!] (C)2001-2007 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$RCSfile: menu.js,v $
	$Revision: 1.66 $
	$Date: 2007/07/26 07:35:27 $
*/
document.write ('<div id="append_parent"></div>');
function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}
function $$$(id) {
	return document.getElementById(id);
}
var jsmenu = new Array();
var ctrlobjclassName;
jsmenu['active'] = new Array();
jsmenu['timer'] = new Array();
jsmenu['iframe'] = new Array();

function initCtrl(ctrlobj, click, duration, timeout, layer) {
	if(ctrlobj && !ctrlobj.initialized) {
		ctrlobj.initialized = true;
		ctrlobj.unselectable = true;

		ctrlobj.outfunc = typeof ctrlobj.onmouseout == 'function' ? ctrlobj.onmouseout : null;
		ctrlobj.onmouseout = function() {
			if(this.outfunc) this.outfunc();
			if(duration < 3) jsmenu['timer'][ctrlobj.id] = setTimeout('hideMenu(' + layer + ')', timeout);
		}

		if(click && duration) {
			ctrlobj.clickfunc = typeof ctrlobj.onclick == 'function' ? ctrlobj.onclick : null;
			ctrlobj.onclick = function (e) {
				doane(e);
				if(jsmenu['active'][layer] == null || jsmenu['active'][layer].ctrlkey != this.id) {
					if(this.clickfunc) this.clickfunc();
					else showMenu(this.id, true);
				} else {
					hideMenu(layer);
				}
			}
		}

		ctrlobj.overfunc = typeof ctrlobj.onmouseover == 'function' ? ctrlobj.onmouseover : null;
		ctrlobj.onmouseover = function(e) {
			doane(e);
			if(this.overfunc) this.overfunc();
			if(click) {
				clearTimeout(jsmenu['timer'][this.id]);
			} else {
				for(var id in jsmenu['timer']) {
					if(jsmenu['timer'][id]) clearTimeout(jsmenu['timer'][id]);
				}
			}
		}
	}
}

function initMenu(ctrlid, menuobj, duration, timeout, layer) {
	if(menuobj && !menuobj.initialized) {
		menuobj.initialized = true;
		menuobj.ctrlkey = ctrlid;
		menuobj.onclick = ebygum;
		menuobj.style.position = 'absolute';
		if(duration < 3) {
			if(duration > 1) {
				menuobj.onmouseover = function() {
					clearTimeout(jsmenu['timer'][ctrlid]);
				}
			}
			if(duration != 1) {
				menuobj.onmouseout = function() {
					jsmenu['timer'][ctrlid] = setTimeout('hideMenu(' + layer + ')', timeout);
				}
			}
		}
		menuobj.style.zIndex = 50;
		if(is_ie) {
			menuobj.style.filter += "progid:DXImageTransform.Microsoft.shadow(direction=135,color=#CCCCCC,strength=2)";
		}
	}
}

function showMenu(ctrlid, click, offset, duration, timeout, layer, showid, maxh) {
	e = window.event ? window.event : showMenu.caller.arguments[0];
	var ctrlobj =  $$$(ctrlid);
	if(!ctrlobj) return;
	if(isUndefined(click)) click = false;
	if(isUndefined(offset)) offset = 0;
	if(isUndefined(duration)) duration = 2;
	if(isUndefined(timeout)) timeout = 500;
	if(isUndefined(layer)) layer = 0;
	if(isUndefined(showid)) showid = ctrlid;
	var showobj =  $$$(showid);
	var menuobj =  $$$(showid + '_menu');
	if(!showobj|| !menuobj) return;
	if(isUndefined(maxh)) maxh = 600;
    
	hideMenu(layer);
   
	for(var id in jsmenu['timer']) {
		if(jsmenu['timer'][id]) clearTimeout(jsmenu['timer'][id]);
	}

	initCtrl(ctrlobj, click, duration, timeout, layer);
	ctrlobjclassName = ctrlobj.className;
	ctrlobj.className += ' hover';
	initMenu(ctrlid, menuobj, duration, timeout, layer);
   
	menuobj.style.display = '';
	if(!is_opera) {
		menuobj.style.clip = 'rect(auto, auto, auto, auto)';
	}

	setMenuPosition(showid, offset);

	if(is_ie && is_ie < 7) {
		if(!jsmenu['iframe'][layer]) {
			var iframe = document.createElement('iframe');
			iframe.style.display = 'none';
			iframe.style.position = 'absolute';
			iframe.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)';
			 $$$('append_parent') ?  $$$('append_parent').appendChild(iframe) : menuobj.parentNode.appendChild(iframe);
			jsmenu['iframe'][layer] = iframe;
		}
		jsmenu['iframe'][layer].style.top = menuobj.style.top;
		jsmenu['iframe'][layer].style.left = menuobj.style.left;
		jsmenu['iframe'][layer].style.width = menuobj.w;
		jsmenu['iframe'][layer].style.height = menuobj.h;
		jsmenu['iframe'][layer].style.display = 'block';
	}

	if(maxh && menuobj.scrollHeight > maxh) {
		menuobj.style.height = maxh + 'px';
		if(is_opera) {
			menuobj.style.overflow = 'auto';
		} else {
			menuobj.style.overflowY = 'auto';
		}
	}

	if(!duration) {
		setTimeout('hideMenu(' + layer + ')', timeout);
	}

	jsmenu['active'][layer] = menuobj;
	
}

function setMenuPosition(showid, offset) {
	var showobj =  $$$(showid);
	var menuobj =  $$$(showid + '_menu');
	if(isUndefined(offset)) offset = 0;
	if(showobj) {
		showobj.pos = fetchOffset(showobj);
		showobj.X = showobj.pos['left'];
		showobj.Y = showobj.pos['top'];
		showobj.w = showobj.offsetWidth;
		showobj.h = showobj.offsetHeight;
		menuobj.w = menuobj.offsetWidth;
		menuobj.h = menuobj.offsetHeight;
		menuobj.style.left = (showobj.X + menuobj.w > document.body.clientWidth) && (showobj.X + showobj.w - menuobj.w >= 0) ? showobj.X + showobj.w - menuobj.w + 'px' : showobj.X + 'px';
		menuobj.style.top = offset == 1 ? showobj.Y + 'px' : (offset == 2 || ((showobj.Y + showobj.h + menuobj.h > document.documentElement.scrollTop + document.documentElement.clientHeight) && (showobj.Y - menuobj.h >= 0)) ? (showobj.Y - menuobj.h) + 'px' : showobj.Y + showobj.h + 'px');
		if(menuobj.style.clip && !is_opera) {
			menuobj.style.clip = 'rect(auto, auto, auto, auto)';
		}
	}
}

function hideMenu(layer) {
	if(isUndefined(layer)) layer = 0;
	if(jsmenu['active'][layer]) {
		try {
			 $$$(jsmenu['active'][layer].ctrlkey).className = ctrlobjclassName;
		} catch(e) {}
		clearTimeout(jsmenu['timer'][jsmenu['active'][layer].ctrlkey]);
		jsmenu['active'][layer].style.display = 'none';
		if(is_ie && is_ie < 7 && jsmenu['iframe'][layer]) {
			jsmenu['iframe'][layer].style.display = 'none';
		}
		jsmenu['active'][layer] = null;
	}
}

function fetchOffset(obj) {
	var left_offset = obj.offsetLeft;
	var top_offset = obj.offsetTop;
	while((obj = obj.offsetParent) != null) {
		left_offset += obj.offsetLeft;
		top_offset += obj.offsetTop;
	}
	return { 'left' : left_offset, 'top' : top_offset };
}

function ebygum(eventobj) {
	if(!eventobj || is_ie) {
		window.event.cancelBubble = true;
		return window.event;
	} else {
		if(eventobj.target.type == 'submit') {
			eventobj.target.form.submit();
		}
		eventobj.stopPropagation();
		return eventobj;
	}
}

function menuoption_onclick_function(e) {
	this.clickfunc();
	hideMenu();
}

function menuoption_onclick_link(e) {
	choose(e, this);
}

function menuoption_onmouseover(e) {
	this.className = 'popupmenu_highlight';
}

function menuoption_onmouseout(e) {
	this.className = 'popupmenu_option';
}

function choose(e, obj) {
	var links = obj.getElementsByTagName('a');
	if(links[0]) {
		if(is_ie) {
			links[0].click();
			window.event.cancelBubble = true;
		} else {
			if(e.shiftKey) {
				window.open(links[0].href);
				e.stopPropagation();
				e.preventDefault();
			} else {
				window.location = links[0].href;
				e.stopPropagation();
				e.preventDefault();
			}
		}
		hideMenu();
	}
}

/*附加common函数*/
function doane(event) {
	e = event ? event : window.event;
	if(is_ie) {
		e.returnValue = false;
		e.cancelBubble = true;
	} else if(e) {
		e.stopPropagation();
		e.preventDefault();
	}
}
var smdiv = new Array();
function smileyMenu(ctrl) {

	ctrl.style.cursor = 'pointer';
	if(ctrl.alt) {
		ctrl.pop = ctrl.alt;
		ctrl.alt = '';
	}
	if(ctrl.title) {
		ctrl.lw = ctrl.title;
		ctrl.title = '';
	}

	if(!smdiv[ctrl.id]) {
		smdiv[ctrl.id] = document.createElement('div');
		smdiv[ctrl.id].id = ctrl.id + '_menu';
		smdiv[ctrl.id].style.display = 'none';
		smdiv[ctrl.id].className = 'popupmenu_popup';
		ctrl.parentNode.appendChild(smdiv[ctrl.id]);
	}
	
	smdiv[ctrl.id].innerHTML = '<table style="width: 60px;height: 60px;text-align: center;vertical-align: middle;" style="background: #FFFFFF;"><tr><td><img src="' + ctrl.src + '" border="0"  /></td></tr></table>';
	showMenu(ctrl.id, 0, 0, 1, 0);
	
}

/*关键词相关文章显示*/

function tagshow(strers,keys,event)
{  
	var obj = is_ie ? event.srcElement : event.target;
	obj.id = !obj.id ? 'tag_' + Math.random() : obj.id;
	var href = !isUndefined( $$$(obj.id).href) ? $(obj.id).href : $(obj.id).attributes['href'].value;

	var div = $(obj.id + '_menu');
	if (!div)
	{
		    div = document.createElement('div');
			div.ctrlid = obj.id;
			div.id = obj.id + '_menu';
			div.style.display = 'none';
			div.className = 'popupmenu_popup popupmenu_option';
			document.body.appendChild(div);
	}
	       
		  else
	{showMenu(div.ctrlid);}

			get_id(div.id).innerHTML='正在载入相关主题信息..'

			igets(strers+escape(keys), function(strs){
			if (strs != "$error$") get_id(div.id).innerHTML ='<DIV style="width:400px;text-align:left">' +strs+'<a href='+href+'><b>More...</b></a></div>';
				showMenu(div.ctrlid);
			});
           
			showMenu(div.ctrlid);
		
  }