/*if (top.location != location) {
  top.location.href = document.location.href;
}*/

var ids=new Array();
var hidecoex = false;

function QAinit(){
if(document.getElementById){
var tids=document.getElementsByTagName('img');
for(i=0;i<tids.length;i++)if(tids[i].className=="subtitle")ids[ids.length]=tids[i];
for(i=0;i<ids.length;i++)ids[i].onmouseup=setstate;
}}

function setstate(){
 for(i=0;i<ids.length;i++){
  if(ids[i]==this){
   var d=this.parentNode.getElementsByTagName('span')[0];
   var i=this.parentNode.getElementsByTagName('img')[0];
   if(d.style.display=="inline") {
    d.style.display="none";
    i.src = "expand.gif";
   } else {
    d.style.display="inline";
    i.src = "unexpand.gif";
   }
  }
 }
}

function expandall(){
if(document.getElementById){
for(i=0;i<ids.length;i++)ids[i].parentNode.getElementsByTagName('span')[1].style.display="block";
}}

function collapseall(){
if(document.getElementById){
for(i=0;i<ids.length;i++)ids[i].parentNode.getElementsByTagName('span')[1].style.display="none";
}}

function removelink() {
  if(document.getElementById('linkres')) {
    document.getElementById('linkres').value = '';
  }
  if(document.getElementById('linkrow')) {
    document.getElementById('linkrow').style.display = 'none';
  }
}


function updatedictionary(book, offset) {
  var node = document.getElementById("dic" + offset).value;
  var url = "update.pl?data=dictionary," + book + "," + offset + "," + node; 
  request.open("GET", url, true);
  request.onreadystatechange = updatePage;
  request.send(null);
}

   function updatePage() {
     if (request.readyState == 4) {
       if (request.status == 200) {
var response = request.responseText;
if(response != 'OK') {
  alert(response);
}
       }
     }
   }


var request = false;
try {
  request = new XMLHttpRequest();
} catch (trymicrosoft) {
  try {
    request = new ActiveXObject("Msxml2.XMLHTTP");
  } catch (othermicrosoft) {
    try {
      request = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (failed) {
      request = false;
    }
  }
}

if (!request)
  alert("Error initializing XMLHttpRequest!");


var depthreq = 1;
var namereq = '';
var showsub = 0;

   function getData(name, depth) {
     namereq = name;
     var node = document.getElementById("l" + name + depth).value;
    document.getElementById(name).value = node;
    if(node == '' || node == 0) {
       document.getElementById("s" + name + (depth+1)).innerHTML = '';
     } else {
       var iflang = document.getElementById("if").value;
       var url = "nav.pl?node=" + node + "&if=" + iflang + "&sub=" + showsub + "&name=" + name;
       depthreq = depth;
       request.open("GET", url, true);
       request.onreadystatechange = updatePage;
       request.send(null);
     }
   }

   function updatePage() {
    if (request.readyState == 4) {
       if (request.status == 200) {
         if(request.responseText.charAt(0) == "0") {
           /*document.getElementById("orig").innerHTML =  '<p>' + request.responseText.substring(1) + '</p>';*/
         } else {
             /*document.getElementById("orig").innerHTML = '';*/
           if(request.responseText != '') {
             var alltext = "All";
             if(document.getElementById("if").value == 'gb') {alltext = "全部";}
             document.getElementById("s"+namereq + (depthreq+1)).innerHTML =  '<select id="l'+namereq + (depthreq+1) + '" class="booklistbox" onChange="getData(\''+namereq +'\',' + (depthreq+1) + ');"><option value="">[' + alltext + ']</option>' + request.responseText + '</select><span id="s' + namereq+ (depthreq+2) + '"></span>';
/*alert(document.getElementById("s"+namereq + (depthreq+1)).innerHTML);*/
           }
         }
       } else
         alert("status is " + request.status);
     }
   }

function addSearch(depth) {
           document.getElementById("param"+depth).innerHTML =  '<br /><input type="text" name="search' + depth + '" id="search' + depth + '" size="20" class="searchbox" /><input type="radio" name="textonly' + depth + '" id="textonly' + depth + '" value="textonly" checked="checked" onclick="hideSemantics(' + depth + ');" />Text search<input type="radio" name="textonly' + depth + '" value="semantic"  onclick="matchword(' + depth + ');" />Dictionary match<span id="semantic' + (depth) + '"></span><br /><span id="param' + (depth+1) + '" name="param' + (depth+1) + '"><input type="submit" value="More..." onclick="addSearch(' + (depth+1) + ');" /></span>';
}

function matchword(depth, hide) {
  if(hide) {
    hidecoex = true;
  }
     var node = document.getElementById("search" + depth).value;
     if(node == '') {
       alert('Please enter the word or character you wish to search on.\n請先輸入您想要查詢的字詞。');
       document.getElementById("textonly"+depth).checked = "checked";

       return false;
     } else {
       var url = "dic.pl?char=" + escape(node) + "&if=en"; 
       depthreq = depth;
       request.open("GET", url, true);
       request.onreadystatechange = showSemantics;
       request.send(null);
     }
}

function findResource() {
     var node = document.getElementById("searchres").value;
     document.getElementById("resourcechoice").innerHTML = '';
     if(node == '') {
       alert('Please enter the surname of an author or a word in the title to search on.\n請先輸入作者姓名或書名的關鍵詞。');
       return false;
     } else {
       var url = "res.pl?search=" + escape(node) + "&if=en";
       request.open("GET", url, true);
       request.onreadystatechange = showResources;
       request.send(null);
     }
  return false;
}
function showResources() {
    if (request.readyState == 4) {
       if (request.status == 200) {
         if(request.responseText.charAt(0) == "0") {
           alert('No matching entries found.');
         } else {
             document.getElementById("resourcechoice").innerHTML =  '<select name="resource" id="resource">' + request.responseText + '</select><input type="submit" value="Add" />';
         }
       } else
         alert("status is " + request.status);
     }
}

   function showSemantics() {
    if (request.readyState == 4) {
       if (request.status == 200) {
         if(request.responseText.charAt(0) == "0") {
           alert('No matching entries in the CTP dictionary.');
           document.getElementById("textonly"+depthreq).checked = "checked";

           /*document.getElementById("semantic"+depthreq).innerHTML =  request.responseText.substring(1);*/
         } else {
           if(hidecoex) {
             document.getElementById("semantic"+depthreq).innerHTML =  '<select name="semanticchoice' + depthreq + '" id="semanticchoice' + depthreq + '">' + request.responseText + '</select>';
           } else {
             document.getElementById("semantic"+depthreq).innerHTML =  '<select id="semanticchoice' + depthreq + '">' + request.responseText + '</select><br /><input type="checkbox" id="filterc' + depthreq + '" value="yes" />Include coextensive terms';
           }
         }
       } else
         alert("status is " + request.status);
     }
   }
function hideSemantics(depth) {
  document.getElementById("semantic"+depth).innerHTML =  "";

}

function noSemantics(depth) {
  document.getElementById("textonly"+depth).checked = "checked";

}

function enableParallel() {
  if(document.getElementById("enableparallel").checked) {
    document.getElementById("lparallelsearch1").disabled = '';
  } else {
    document.getElementById("sparallelsearch2").innerHTML = '';
    document.getElementById("lparallelsearch1").options[0].selected = true;
    document.getElementById("lparallelsearch1").disabled = 'disabled';
  }
}


function prepareSearch() {
document.getElementById("node").value = 3925;
  var i;
for(i=1;i<10;i++) {
    var thisCntrl = document.getElementById("lnode"+i);
    if(thisCntrl) {
     if(thisCntrl.options[thisCntrl.selectedIndex].value) {
      document.getElementById("node").value = thisCntrl.options[thisCntrl.selectedIndex].value;
     }
    }
  }
if(!document.getElementById("node").value) {
  document.getElementById("node").value = 3925;
}
if(!document.getElementById("parallelsearch").value) {
  document.getElementById("parallelsearch").value = 3925;
}
for(i=1;i<10;i++) {
    var thisCntrl = document.getElementById("lparallelsearch"+i);
    if(thisCntrl) {
     if(thisCntrl.options[thisCntrl.selectedIndex].value) {
      document.getElementById("parallelsearch").value = thisCntrl.options[thisCntrl.selectedIndex].value;
     }
    }
  }

if(!document.getElementById("enableparallel").checked) {
  document.getElementById("parallelsearch").value = '';
}

  var searchstring = '';
  var filterstring = '';
  for(i=1;i<10;i++) {

   if(document.getElementById("textonly" + i)) {
    if(document.getElementById("textonly" + i).checked) {
     if(document.getElementById("search" + i).value != '') {
      if(searchstring != '') {
        searchstring = searchstring + " ";
      }
      if(document.getElementById("search" + i).value.indexOf(" ")>-1) {
        searchstring = searchstring + '"' + document.getElementById("search" + i).value + '"';
      } else {
        searchstring = searchstring + document.getElementById("search" + i).value;
      }
     }
    } else {
      var ind = document.getElementById("semanticchoice" + i).selectedIndex;
      if(filterstring != '') {
        filterstring = filterstring + ",";
      }
      filterstring = filterstring + 'd' + document.getElementById("semanticchoice" + i).options[ind].value;
      if(document.getElementById("filterc" + i).checked!= '') {
         filterstring = filterstring + "c";
      }
    }
   }
  }
  if(sellist) {
    for(i=0;i<sellist.length;i++) {
      if(filterstring != '') {
        filterstring = filterstring + ",";
      }
      filterstring = filterstring + "p" + sellist[i];
    }
  }

  document.getElementById("filter").value = filterstring;
  document.getElementById("searchu").value = searchstring;
  document.getElementById("yearfrom").value = document.getElementById("yearfrom1").value;
  document.getElementById("yearto").value = document.getElementById("yearto1").value;
  if(document.getElementById("reqtype1").checked) {
    document.getElementById("reqtype").value = 'stats';
  } else {
    document.getElementById("reqtype").value = '';
  }
  if(document.getElementById("matchtype1").checked) {
    document.getElementById("matchtype").value = 'exact';
  } else if(document.getElementById("matchtype2").checked) {
    document.getElementById("matchtype").value = 'binary';
  } else {
    document.getElementById("matchtype").value = '';
  }

  var propsearch = "";
  var propsearchterms = 0;
  for(i=0;i<sellist.length;i++) {
   var thisterm = document.getElementById("propsearch"+sellist[i]).value;
   propsearch = propsearch + thisterm + "|";
   if(thisterm) {
     propsearchterms++;
   }
  }
  if(propsearchterms==0) {
    propsearch = "";
  }
  document.getElementById("ps").value = propsearch;
  return true;

}

function vote(message, voteval) {
  var url = "vote.pl?message=" + message + "&vote=" + voteval; 
  request.open("GET", url, true);
/*  request.onreadystatechange = showSemantics;*/
  request.send(null);
  if(document.getElementById("vote"+message)) {
    document.getElementById("vote"+message).style.display = 'none';
  }
}



function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  QAinit(e);
initPopups();
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);



function getElementsByClass( searchClass, domNode, tagNames) {
	if (domNode == null) domNode = document;
	if (tagNames == null) tagNames = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagNames);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}

function initPopups() {
  var links = getElementsByClass('tn', document, 'a');
  var n, i;
  for(n=0;n<links.length;n++) {
    var popupcontent = links[n].getElementsByTagName('span')[0];
    var idnum = links[n].href.substr(links[n].href.indexOf('#')+1,10);
    var desc = "";
    var source = document.getElementsByName(idnum);
    for(i=0;i<source.length;i++) {
      if(source[i].parentNode.parentNode.cells) {
       if(desc.indexOf(source[i].parentNode.parentNode.cells[4].innerHTML)==-1) {
        if(desc != "") {
          desc = desc + "<br />";
        }
        desc = desc + "<b>" + source[i].parentNode.parentNode.cells[3].innerHTML + "</b><br />" + source[i].parentNode.parentNode.cells[4].innerHTML;
       }
      }
    }
    var newdiv = document.createElement("div");
    newdiv.innerHTML = desc;
    popupcontent.appendChild(newdiv);
  }
}

function cite (title, url, author, editor) {
  window.open ("/cite.pl?title="+title+"&url="+url+"&author="+author+"&editor="+editor,"","menubar=1,resizable=1,width=700,height=400");
}


function showRefs() {
  var targetdiv = document.getElementById("metaviewer");
  var targettext = "";
  for (var i=0; i<arguments.length; i++) {
    targettext += document.getElementById("meta"+arguments[i]).innerHTML + '<br />';
  }
  targetdiv.innerHTML = targettext;
}

var lasthoverid;
var segmentcolour = new Array();

function highlightSegment(tgt, event) {
  if(lasthoverid == tgt) {
    return;
  }
  lasthoverid = tgt;
  var target = document.getElementById(arguments[0]);
  segmentcolour[tgt]=target.style.backgroundColor;
//alert(target.style.backgroundColor);
  target.style.background='#FF8888';
//  target.style.border='1px solid red';
  target.style.margin='0';
  document.getElementById('metaviewer').style.display = 'inline';
  document.getElementById('metaviewer').style.left = mouseX(event) - 100 + 'px';
  document.getElementById('metaviewer').style.top = mouseY(event) + 60 + 'px'; 

//  target.childNodes[0].style.display = 'inline';
//  target.childNodes[0].innerHTML = document.getElementById("metaviewer").innerHTML;
}

function unhighlightSegment() {
  lasthoverid = '';
  var target = document.getElementById(arguments[0]);
//  target.style.border='';

  target.style.background=segmentcolour[arguments[0]];
//  target.style.margin='1px';
  document.getElementById('metaviewer').style.display = 'none';
//  target.childNodes[0].innerHTML = '';
}

function mouseX(evt) {
if (evt.pageX) return evt.pageX;
else if (evt.clientX)
   return evt.clientX + (document.documentElement.scrollLeft ?
   document.documentElement.scrollLeft :
   document.body.scrollLeft);
else return null;
}
function mouseY(evt) {
if (evt.pageY) return evt.pageY;
else if (evt.clientY)
   return evt.clientY + (document.documentElement.scrollTop ?
   document.documentElement.scrollTop :
   document.body.scrollTop);
else return null;
}

function updateAccepted()
{
  if(request.readyState == 4) {
    if(request.status == 200) {
      var response = request.responseText;
//      if(response != 'OK') {
          var bits = response.split('|');
          document.getElementById('accept'+bits[0]).innerHTML = bits[1];
//        alert(response);
//      }
    }
  }
}

function acceptProperty(propid, accept) {
  var url = "propaccept.pl";
  request.open("POST", url, true);
  request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
  request.onreadystatechange = updateAccepted;
  var iflang = document.getElementById("if").value;
  request.send("id=" + propid + "&accept=" + accept + "&if=" + iflang);
}




function updatePublic()
{
  if(request.readyState == 4) {
    if(request.status == 200) {
      var response = request.responseText;
        var bits = response.split('|');
        if(bits[1] == '0') {
          document.getElementById('pub'+bits[0]).innerHTML = bits[2];
        } else {
          alert(bits[1]);
      }
    }
  }
}
function setPublic(propid, setpub) {
  var url = "proppublic.pl";
  request.open("POST", url, true);
  request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
  request.onreadystatechange = updatePublic;
  var iflang = document.getElementById("if").value;
  request.send("id=" + propid + "&public=" + setpub + "&if=" + iflang);
}

var detailid = "";
var commentaryid = "";

function getPropDetails(propid, target, node) {
  detailid = 'info'+target;
  var existing = document.getElementById(detailid);
  if(existing) {
    if(existing.style.display == '') {
      existing.style.display = 'none';
    } else {
      existing.style.display = '';
    }
  } else {
    var newel = document.createElement('div');
    newel.setAttribute('id', 'info'+target);
    newel.style.marginLeft = '20px';
    newel.style.color = '#000000';
    node.parentNode.parentNode.appendChild(newel); 
    var url = "propinfo.pl?prop=" + propid + "&if="+document.getElementById('if').value; 
    if(document.getElementById('remap')) { url = url + "&remap="+document.getElementById('remap').value; }
    request.open("GET", url, true);
    request.onreadystatechange = showPropDetails;
    request.send(null);
  }
}
function showPropDetails()
{
  if(request.readyState == 4) {
    if(request.status == 200) {
      var response = request.responseText;
      if(response.charAt(0) == '0') {
        alert(response.substring(1));
      } else {
        document.getElementById(detailid).innerHTML = response.substring(1);
//alert(document.getElementById(detailid).innerHTML);
      }
    }
  }
}





function getCommentary(node) {
  commentaryid = 'comm'+node;
  var existing = (document.getElementById(commentaryid));
  if(existing.innerHTML != '') {
    if(existing.style.display == '') {
      existing.style.display = 'none';
    } else {
      existing.style.display = '';
    }
  } else {
/*    var newel = document.createElement('div');
    newel.setAttribute('id', 'comm'+node);
    newel.style.marginLeft = '20px';
    newel.style.color = '#000000';
    document.getElementById('comm'+node).appendChild(newel); 
*/
    var url = "commentary.pl?node=" + node + "&if="+document.getElementById('if').value; 
    if(document.getElementById('remap')) { url = url + "&remap="+document.getElementById('remap').value; }
    request.open("GET", url, true);
    request.onreadystatechange = showCommentary;
    request.send(null);
  }
}
function showCommentary()
{
  if(request.readyState == 4) {
    if(request.status == 200) {
      var response = request.responseText;
      if(response.charAt(0) == '0') {
        alert(response.substring(1));
      } else {
        document.getElementById(commentaryid).innerHTML = response.substring(1);
      }
    }
  }
}