var i=1;
  var ua = navigator.userAgent;
  var opera = /opera [56789]|opera\/[56789]/i.test(ua);
  var ie = !opera && /MSIE/.test(ua);
  var ie50 = ie && /MSIE 5\.[01234]/.test(ua);
  var ie6 = ie && /MSIE [6789]/.test(ua);
  var ieBox = ie && (document.compatMode == null || document.compatMode != "CSS1Compat");
  var moz = !opera && /gecko/i.test(ua);
  var nn6 = !opera && /netscape.*6\./i.test(ua);
  var safari = ua.indexOf('Safari')>-1;
  function removeFileField(d){
      var ftr=document.getElementById("fid"+d);
      ftr=ftr.parentNode.parentNode;
      ftr.parentNode.removeChild(ftr);
  }

  function cloneFileField(){
      var ftr=document.getElementById("fileTR");
      var ftr2= ftr.cloneNode(true);

      var td=ftr2.getElementsByTagName("input")[0];
      td.name="fff"+i;
      td.id="fid"+i;

      var a=ftr2.getElementsByTagName("a")[0];
      a.href="javascript:removeFileField("+i+")";
      a.style.display="inline";

      var ftable=document.getElementById("fileTBODY");
      ftable.appendChild(ftr2);
      i++;
  }

  function createDirectory(e){
     var desc = "Please enter folder name";
     var title = "Create a new folder";
     var baseValue = "";
     promptIE7(e,desc, title , baseValue, "createDirectoryAction");

  }

  function createDirectoryAction(dirName){
     if (dirName){
      document.theForm.newdir.value=dirName;
       document.theForm.submit();
     }
    return false;
  }



  function upDir(){
     document.theForm.updir.value="1";
     document.theForm.submit();
  }
  function emptyRecycleBin(){
    if(window.confirm("Are you sure you want to permanently delete all files in the Recycle Bin?")){
      massAction(18);
    }
  }

  function deldir(id,name){
       delImpl(id,name,1);
  }

  function delfile(id,name){
       delImpl(id,name,2);
  }

  function delImpl(id,name,w){
    var confirmMsg = "Are you sure you want to move $[p1] to the Recycle Bin?\nFiles in your Recycle Bin are subject to deletion at any time.";
   confirmMsg =  confirmMsg.replace(/\$\[p1\]/,"\""+name+"\"");
  
    if (window.confirm(confirmMsg)){
      if (w==1){
       document.theForm.deldir.value=id;
      }else {
       document.theForm.delfile.value=id;
      }
      document.theForm.submit();
    }
  }
  function delfilePerm(id,name){
       delImplPerm(id,name,2);
  }

  function delImplPerm(id,name,w){
    var confirmMsg = "Are you sure you want to delete $[p1] permanently?";
    confirmMsg = confirmMsg.replace(/\$\[p1\]/,"\""+name+"\"");
    if (window.confirm(confirmMsg)){
      if (w==1){
       document.theForm.deldir.value=id;
      }else {
       document.theForm.delfile.value=id;
      }
      document.theForm.submit();
    }
  }
  function restoreFile(id,name){
    var confirmMsg = "Are you sure you want to restore $[p1] ?";
    confirmMsg = confirmMsg.replace(/\$\[p1\]/,"\""+name+"\"");
    if (window.confirm(confirmMsg)){
      document.theForm.restorefile.value=id;
      document.theForm.submit();
    }
  }


  function checkIt(checked){
  var f=document.theForm;
  var rowIndex=0;
  //dirs
  if (f.ch_d!=null){
    if(f.ch_d.checked!=checked && f.ch_d.parentNode!=null){
      fileDown(f.ch_d.parentNode.parentNode,rowIndex,true)
      fileOut(f.ch_d.parentNode.parentNode,false,null,rowIndex++);
    }
    f.ch_d.checked=checked;
    var i=0
    while (f.ch_d[i]!=null){
      if(f.ch_d[i].checked!=checked){
        fileDown(f.ch_d[i].parentNode.parentNode,rowIndex,true);
        fileOut(f.ch_d[i].parentNode.parentNode,false,null,rowIndex++);
      }
      f.ch_d[i].checked=checked;
      i++;
    }
  }

  //files
  if (f.ch_f!=null){
    if(f.ch_f.checked!=checked && f.ch_f.parentNode!=null){
      fileDown(f.ch_f.parentNode.parentNode,rowIndex,false);
      fileOut(f.ch_f.parentNode.parentNode,false,null,rowIndex++);
    }

    f.ch_f.checked=checked;
    var i=0
    while (f.ch_f[i]!=null){
      if(f.ch_f[i].checked!=checked){
        fileDown(f.ch_f[i].parentNode.parentNode,rowIndex,false);
        fileOut(f.ch_f[i].parentNode.parentNode,false,null,rowIndex++);
      }
      f.ch_f[i].checked=checked;
      i++;
    }
  }

  }

  var selectAll=true;

  function selectAllOrNone(){
    var sAll=document.getElementById("selectAll");
    if (selectAll){
      checkIt(true);
      sAll.title="Select None";
      selectAll=false;
    } else {
      checkIt(false);
      sAll.title="Select All";
      selectAll=true;
    }


  }

  function checkFileWithId(fileid){
    var f=document.theForm;
    //files
    if (f.ch_f!=null){
      if(f.ch_f.value==fileid) f.ch_f.checked=true;
      var i=0
      while (f.ch_f[i]!=null){
        if(f.ch_f[i].value==fileid) f.ch_f[i].checked=true;
        i++;
      }
    }
  }
  function checkDirWithId(dirid){
    var f=document.theForm;
    //files
    if (f.ch_d!=null){
      if(f.ch_d.value==dirid) f.ch_d.checked=true;
      var i=0
      while (f.ch_d[i]!=null){
        if(f.ch_d[i].value==dirid) f.ch_d[i].checked=true;
        i++;
      }
    }
  }

  function uncheckAll(){
    checkDirsImpl(false);
    checkFilesImpl(false);
  }

  function checkDirs(){
    checkDirsImpl(true);
  }
  function checkDirsImpl(checkValue){
    var f=document.theForm;
    //dirs
    if (f.ch_d!=null){
      f.ch_d.checked=checkValue;
      var i=0
      while (f.ch_d[i]!=null){
        f.ch_d[i].checked=checkValue;
        i++;
      }
    }
  }

  function checkFiles(){
    checkFilesImpl(true);
  }
  function unCheckFiles(){
    checkFilesImpl(false);
  }
  function checkFilesImpl(checkValue){
    var f=document.theForm;
    //files
    if (f.ch_f!=null){
      f.ch_f.checked=checkValue;
      var i=0
      while (f.ch_f[i]!=null){
        f.ch_f[i].checked=checkValue;
        i++;
      }
    }
  }

  function hasCheckedFiles(){
    var res=false;
      var f=document.theForm;
  //files
  if (f.ch_f!=null){
    if (f.ch_f.checked) return true;
    var i=0
    while (f.ch_f[i]!=null){
      if (f.ch_f[i].checked){
        return true;
      }
      i++;
    }
  }

   //dirs
  if (f.ch_d!=null){
    if (f.ch_d.checked) return true;
    var j=0
    while (f.ch_d[j]!=null){
      if (f.ch_d[j].checked){
        return true;
      }
      j++;
    }
  }

  return false;

  }

  function toEmail(mode){
    if (!hasCheckedFiles()){
      alert("Please check files to email");
    }else {
      massAction(mode);
    }

  }

  function massAction(mode){
      document.theForm.homemode.value=mode;
      document.theForm.submit();
  }

  function goForward(){
    massAction(14);
  }
  function goBack(){
    massAction(13);
  }

  function copyFiles(mode){
    if (!hasCheckedFiles()){
      alert("Please check files to copy");
    }else {
      massAction(mode);
    }
  }
  function makeRenameWOEvent(oldname,fid,isItFileToRename){
    document.theForm.renamefileid.value=fid;
    document.theForm.isFileToRename.value=isItFileToRename;
    var desc = "Please enter new name";
    var title = "Rename";
    promptIE7(contextMenuEvent,desc, title , oldname, "renameFileAction2",contextMenuEventX,contextMenuEventY,true);
  }

  
  function renameFile(event,oldname,fid,isItFileToRename,offx,offy){
    document.theForm.renamefileid.value=fid;
    document.theForm.isFileToRename.value=isItFileToRename;
    var desc = "Please enter new name";
    var title = "Rename";
    promptIE7(event, desc , title , oldname, "renameFileAction2",offx,offy);
  }

  function renameFileAction2(s){
    if(s.length==0){
      alert("Name should not be empty");
    }else {
      document.theForm.newfilename.value=s;
      massAction(12);
    }
    return false;
  }




  function cutFiles(mode){
    if (!hasCheckedFiles()){
      alert("Please check files to cut");
    }else {
      massAction(mode);
    }
  }


  function deleteFiles(mode){
      if (!hasCheckedFiles()){
          alert("Please check files to move to the Recycle Bin");
      }else {
          if (window.confirm("Are you sure you want to move selected files to the Recycle Bin?\nFiles in your Recycle Bin are subject to deletion at any time.")){
              massAction(mode);
          }
      }
  }
  function restoreFiles(mode){
      if (!hasCheckedFiles()){
          alert("Please check files to restore");
      }else {
          if (window.confirm("Are you sure you want to restore selected files?")){
              massAction(mode);
          }
      }
  }
  function deleteFilesPerm(mode){
      if (!hasCheckedFiles()){
          alert("Please check files to delete");
      }else {
          if (window.confirm("Are you sure you want to delete selected files permanently?")){
              massAction(mode);
          }
      }
  }
  function zipFiles(event,offx,offy){
      if (!hasCheckedFiles()){
          alert("Please check files to zip");
      }else {
        var desc = "Please enter zip filename";
        var title = "Zip";
         promptIE7(event, desc , title ,document.theForm.defaultZipName.value , "zipFilesAction",offx,offy);

      }
  }

   function zipFilesAction(s){
         var enteredZipName=s;
        if(enteredZipName==null || enteredZipName=='undefined' || enteredZipName==''){
          alert("You should enter zip filename");
          return false;
        }
         writeDrag.hide();
         document.theForm.zipname.value=enteredZipName;
         var oldTarget =document.theForm.target;
         var oldAction =document.theForm.action;
         document.theForm.target='zipframe';
         document.theForm.action=document.theForm.zipFormURL.value;

         top.zipStarts = true;
         massAction(9);
         showProgressBar('zip');
         document.theForm.target=oldTarget;
         document.theForm.action=oldAction;
        return false;
      }




    function markFiles(mode){
      if (!hasCheckedFiles()){
        alert("Please check files to mark as public");
      }else {
        massAction(mode);
      }
    }

    function markOffFiles(mode){
      if (!hasCheckedFiles()){
        alert("Please check files to mark off as public");
      }else {
        massAction(mode);
      }
    }

    function showPreview(url){
      var img=document.getElementById("smallImg");
      img.src = url;
      img.style.display="inline";
    }

    function hidePreview(){
      var img=document.getElementById("smallImg");
      img.style.display="none";
    }

    function fileOver(page,isImg,link,rowNum){
//     if (isImg){
//       showPreview(link);
//     }
    setPointer(page,rowNum, 'over', 'Window', (safari?'#FFFFDE':'InfoBackground'), '#C3D9FF');
    //setPointer(page,rowNum, 'over', '#E5E5E5', '#CCFFCC', '#C3D9FF');

    }
    function fileOut(page,isImg,link,rowNum){
//     if (isImg){
//       hidePreview();
//     }
     //setPointer(page,rowNum, 'out', '#E5E5E5', '#CCFFCC', '#C3D9FF');
     setPointer(page, rowNum, 'out', 'Window', (safari?'#FFFFDE':'InfoBackground'), '#C3D9FF');
    }

    function fileDown(page,rowNum,isFile){
      //if (isFile){
        setPointer(page, rowNum, 'click', 'Window', (safari?'#FFFFDE':'InfoBackground'), '#C3D9FF');
      //}
    }


     function fileDownCheckBox(isFile,fid,td,rowNum){



          if (isFile){
                var f=document.theForm;
                //files
                if (f.ch_f!=null){
                  if (f.ch_f.value==fid){
                    f.ch_f.checked!=!f.ch_f.checked;
                  }
                  var i=0
                  while (f.ch_f[i]!=null){
                    //alert(f.ch_f[i].value);
                    if (f.ch_f[i].value==fid){
                      f.ch_f[i].checked=!f.ch_f[i].checked;
                    }
                    i++;
                  }
                }
               } else {

                var f=document.theForm;
                //folders
                if (f.ch_d!=null){
                  if (f.ch_d.value==fid){
                    f.ch_d.checked!=!f.ch_d.checked;
                  }
                  var j=0
                  while (f.ch_d[j]!=null){
                    //alert(f.ch_f[i].value);
                    if (f.ch_d[j].value==fid){
                      f.ch_d[j].checked=!f.ch_d[j].checked;
                    }
                    j++;
                  }
                }
          }

           fileDown(td.parentNode,rowNum,isFile);
        }

function cloneObjShallow(myObj)
{
	if(typeof(myObj) != 'object') return myObj;
	if(myObj == null) return myObj;

	var myNewObj = new Object();

	for(var ifield in myObj)
		myNewObj[ifield] = myObj[ifield];

	return myNewObj;
}

//writeDrag.writeId = "cntnt";
function wrapContent(e, img, w, h, txt,
                     downloadLink, fileExt,
                     wd, offx, offy) {
  var imgStr, cntnt, win, str;
  imgStr = '<img src="' + img + '"' + (w? ' width="' + w + '"': "") + (h? ' height="' + h + '"': "") + '>';
  if( downloadLink ){
      window.originalMediaPreviewEvent=cloneObjShallow(e);
      txt += '\n<a href="#" onclick="return showMediaPreview(window.originalMediaPreviewEvent, \''
              + downloadLink + '\',\''+ fileExt + '\')">';
      txt += '\n<img alt="Play" src="/images/play.gif" title="Play media file" class="absmid" /></a>';
  }
  if ( dragObj.supported && typeof document.body.innerHTML != "undefined" ) {
    cntnt = '<div class="previewImg">' + imgStr + '</div>';
    if (txt) cntnt += '<div class="previewMsg">' + txt + '</div>';
    if (!wd) wd = w;
    document.getElementById("popupTitle").innerHTML = 'Preview';
    writeDrag.set(e, cntnt, wd, offx, offy);
  } else { // non-capable browsers will open sub window
    w = w+80 || wd || 250; h = h+80 || 250; // size
    win = window.open('', 'subwin', 'resizable,width='+w+',height='+h+',left=100,top=100');
    if (win && !win.closed) win.resizeTo(w,h);
    str = '<html><head><title>Image Display</title></head>';
  	str += '<body style="text-align:center">';
    str += imgStr + (txt? '<p>' + txt + '</p>':"");
  	str += '</body></html>'
  	win.document.write(str);
  	win.document.close();
    if (win && !win.closed) win.focus();
  }
  return false;
}







function showMediaPreview(e, url, ext) {
  var spanStr, cntnt, win, str;
  spanStr = '<span id=\'music1\'></span>';
  var w = 330;
  var h = 250; // size
  if ( dragObj.supported && typeof document.body.innerHTML != "undefined" ) {
    cntnt = '<div class="previewImg">' + spanStr + '</div>';
    document.getElementById("popupTitle").innerHTML = 'Play';
    writeDrag.set(e, cntnt, w, 0, 0);
    playMedia(document, url, ext);
  } else { // non-capable browsers will open sub window
    win = window.open('', 'subwin', 'resizable,width='+w+',height='+h+',left=100,top=100');
    if (win && !win.closed) win.resizeTo(w,h);
    str = '<html><head><title>Media  Preview</title></head>';
  	str += '<body style="text-align:center">';
    str += spanStr ;
  	str += '</body></html>'
  	win.document.write(str);
  	win.document.close();
    if (win && !win.closed) win.focus();
    playMedia(win.document, url, ext);
  }
  return false;
}



function showZipPreview(e, previewURL, w, h, wd, fid,unzipFormUrl,unzipProgressUrl) {
  var imgStr, cntnt, win, str;
  if(document.unzipForm!=null){
     document.unzipForm.zipFile.value=fid;
     document.unzipForm.action=unzipFormUrl;
     document.unzipForm.unzipProgressUrl.value=unzipProgressUrl;
  }
  iframeStr = '<iframe src="'+previewURL + '"' + (w? ' width="' + w + '"': "") + (h? ' height="' + h + '"': "") + ' scrolling="yes"></iframe>';
  if (dragObj.supported && typeof document.body.innerHTML != "undefined" ) {//****************
    if(unzipFormUrl!=null && unzipFormUrl!=''){
      cntnt = '<div class="previewImg"><button type="button" class="oneline" onclick="top.unzipAction();" id="unzipButton">Unzip</button><br>' +iframeStr + '</div>';
    }else {
      cntnt = '<div class="previewImg"><br>' +iframeStr + '</div>';
    }

    if (!wd) wd = w;
    document.getElementById("popupTitle").innerHTML = 'Zip preview';
    writeDrag.set(e, cntnt, wd, 0, 0);
  } else { // non-capable browsers will open sub window
    w = w+80 || wd || 250; h = h+80 || 250; // size
    win = window.open(previewURL, 'subwin', 'resizable,width='+w+',height='+h+',left=100,top=100');
    if (win && !win.closed) win.resizeTo(w,h);
    if (win && !win.closed) win.focus();
  }
  return false;
}
function showTextPreview(e, fid, w, h, wd, offx, offy) {
  var imgStr, cntnt, win, str;
  iframeStr = '<iframe src="'+fid + '"' + (w? ' width="' + w + '"': "") + (h? ' height="' + h + '"': "") + ' scrolling="yes"></iframe>';
  if (dragObj.supported && typeof document.body.innerHTML != "undefined" ) {//****************
    cntnt = '<div class="previewImg">' + iframeStr + '</div>';
    if (!wd) wd = w;
    document.getElementById("popupTitle").innerHTML = 'Text preview';
    writeDrag.set(e, cntnt, wd, offx, offy);
  } else { // non-capable browsers will open sub window
    w = w+80 || wd || 250; h = h+80 || 250; // size
    win = window.open(fid, 'subwin', 'resizable,width='+w+',height='+h+',left=100,top=100');
    if (win && !win.closed) win.resizeTo(w,h);
    if (win && !win.closed) win.focus();
  }
  return false;
}

  function openNewWindow(url){
        document.newWindowForm.action=url;
        document.newWindowForm.submit();
    }


  function promptIE7(event, desc, title, baseValue, method,offx,offy, ppEvent){
  var w = 250;
  var h = 250; // size

  if ( dragObj.supported && typeof document.body.innerHTML != "undefined" ) {
    var action = method+"(document.prompt.promptText.value)";
    var cntnt;
    try {
      cntnt = '<div class="text"><form name="prompt" onSubmit="return eval('+action+')" style="padding:5px">'+
              desc+'<br />'+
          '<input type="text" name="promptText" value="'+baseValue+'" style="width:180px" class="xBox" /> '+
          '<input type="submit" value="Ok" style="width:50px" /></form></div>';
      // class="xBox" is attached to the text element so that mouse were working inside the text as usual
      // (selecting text), not dragging the prompt. If class attribute is needed for design
      // then dw_drag.js must be changed to perform substring, not exact class comparison
      document.getElementById("popupTitle").innerHTML = title;
      writeDrag.set(event, cntnt, w, offx,offy,ppEvent);
      document.prompt.promptText.focus();
      document.prompt.promptText.select();
    }catch (e){
    alert(e);
  }
  } else {
    var oldA = method+"(prompt('"+s+"'))";
    return eval(oldA);
  }
  return false;




  }