var textContent;
var lastSave; 
var cPRINT            = 1;
var cPREVIEW          = 2;

var cCUT              = 3;
var cCOPY             = 4;
var cPASTE            = 5;

var cBOLD             = 6;
var cITALIC           = 7;
var cUNDERLINE        = 8;
var cSTRIKETHRU       = 9;
var cSUBSCRIPT        = 10;
var cSUPERSCRIPT      = 11;

var cHX               = 12;
var cFONT_SIZE        = 13;
var cFONT_NAME        = 14;
var cFORE_COLOR       = 15;
var cBACK_COLOR       = 16;

var cOUTDENT          = 17;
var cINDENT           = 18;

var cLEFT             = 19;
var cCENTER           = 20;
var cRIGHT            = 21;

var cPARABUL          = 22;
var cPARANUM          = 23;
var cLINK             = 24;
var cIMAGE            = 25;

var editRange         = null;




function doSimpleAction(id,action){
  // no check needed for these actions
  var editor = document.getElementById(id + "htmlbeditor").document;
  if ( action == cPRINT)   { editor.execCommand("Print",1,""); return; }
  if ( action == cPREVIEW) { showPreview(id);                  return; }

  if (checkDoAction(id) == false) { return; }
  lastSave = null;

  switch (action){
    case cPRINT:             editor.execCommand("Print",1,"");                	break;
    case cPREVIEW:           showPreview(id);                                   break;

    case cCUT:               editRange.execCommand("Cut");                       break;
    case cCOPY:              editRange.execCommand("Copy");                      break;
    case cPASTE:             editRange.execCommand("Paste");                     break;

    case cBOLD:              editRange.execCommand("Bold");                      break;
    case cITALIC:            editRange.execCommand("Italic");                    break;
    case cUNDERLINE:         editRange.execCommand("Underline");                 break;
    case cSTRIKETHRU:        editRange.execCommand("StrikeThrough");             break;
    case cSUBSCRIPT:         editRange.execCommand("SubScript");                 break;
    case cSUPERSCRIPT:       editRange.execCommand("SuperScript");               break;

    case cOUTDENT:           editRange.execCommand("Outdent");                   break;
    case cINDENT:            editRange.execCommand("Indent");                    break;

    case cLEFT:              editRange.execCommand("JustifyLeft");               break;
    case cCENTER:            editRange.execCommand("JustifyCenter");             break;
    case cRIGHT:             editRange.execCommand("JustifyRight");              break;

    case cPARABUL:           editRange.execCommand("InsertUnorderedList");       break;
    case cPARANUM:           editRange.execCommand("InsertOrderedList");         break;
    case cLINK:              editRange.execCommand("CreateLink");                break;
    case cLINK:              editRange.execCommand("CreateLink",1,"");           break;
    case cIMAGE:             editRange.execCommand("InsertImage",1,"");          break;
  }
  save(id);
}


function doComplexAction(id,action,param) {
  if (checkDoAction(id) == false) { return; }
  lastSave = null;
  if (param == "NOP") { return; }
  switch (action){
    case cHX:                editRange.execCommand("FormatBlock", 1,param);  break;
    case cFONT_SIZE:         editRange.execCommand("FontSize",    1,param);  break;
    case cFORE_COLOR:        editRange.execCommand("ForeColor",   1,param);  break;
    case cBACK_COLOR:        editRange.execCommand("BackColor",   1,param);  break;
  }
  save(id);
}

function checkDoAction(id) {
  if (lastSave != id) { return false; }
  if ( editRange == null) { return false; }
  return true;
}

function save(id) {
  lastSave = id;
  var x = document.getElementById(id); 
  if(x!=null) x.value = document.getElementById(id + "htmlbeditor").innerHTML;
  editRange = document.getElementById(id + "htmlbeditor").document.selection.createRange();
  if ( document.getElementById(id + "htmlbeditor").document.selection.createRange().parentElement().id == id + "htmlbeditor") {
    editRange = document.getElementById(id + "htmlbeditor").document.selection.createRange();
  }
}

function save_userexit(id) {
  var x = document.getElementById(id + "_ADD"); 
  if(x!=null) x.value = document.getElementById(id + "htmlbeditor").innerHTML; 
}

function save_restore(id) {
  var x = document.getElementById(id + "_OLD"); 
  if(x!=null) x.value = document.getElementById(id + "htmlbeditor").innerHTML; 
}

var myWindow;
var myId; 
function showPreview(id) {
  save(id);
  myId = id;
  var editor=document.getElementById(id + "htmlbeditor");
  mywindow = window.open('prev_htmlbedit.html');
  window.setTimeout("setContent()",50);
}

function setContent() {
  var x = document.getElementById(myId + "htmlbeditor");
  if(x!=null) {
    try {
      mywindow.document.body.innerHTML = x.innerHTML;
      mywindow.document.close();
    } catch(e) {
	window.setTimeout("setContent()",50);
    }
  }
}