var bbtags   = new Array();

// browser detection
var myAgent   = navigator.userAgent.toLowerCase();
var myVersion = parseInt(navigator.appVersion);
var is_ie   = ((myAgent.indexOf("msie") != -1)  && (myAgent.indexOf("opera") == -1));
var is_win   =  ((myAgent.indexOf("win")!=-1) || (myAgent.indexOf("16bit")!=-1));

function setmode(modeValue) {
 document.cookie = "bbcodemode="+modeValue+"; path=/; expires=Wed, 1 Jan 2020 00:00:00 GMT;";
}

function normalMode(theForm) {
// if (theForm.mode[0].checked) {
  return true;
// }
// else {
//  return false;
// }
}

function getArraySize(theArray) {
  for (i = 0; i < theArray.length; i++) {
    if ((theArray[i] == "undefined") || (theArray[i] == "") || (theArray[i] == null)) return i;
  }

  return theArray.length;
}

function pushArray(theArray, value) {
  theArraySize = getArraySize(theArray);
  theArray[theArraySize] = value;
}

function popArray(theArray) {
  theArraySize = getArraySize(theArray);
  retVal = theArray[theArraySize - 1];
  delete theArray[theArraySize - 1];
  return retVal;
}


function smilie(theSmilie) {
  addText(" " + theSmilie, "", false, document.bbform);
}

function closetag(theForm) {
  if (!normalMode(theForm)) {
    if (bbtags[0]) addText("[/"+ popArray(bbtags) +"]", "", false, theForm);
  }

  setFocus(theForm);
}

function closeall(theForm) {
  if (!normalMode(theForm)) {
    if (bbtags[0]) {
      while (bbtags[0]) {
        addText("[/"+ popArray(bbtags) +"]", "", false, theForm);
      }
    }
  }

  setFocus(theForm);
}


function fontformat(theForm,theValue,theType) {
  setFocus(theForm);

  if (normalMode(theForm)) {
    if (theValue != 0) {

      var selectedText = getSelectedText(theForm);
      var insertText = prompt(font_formatter_prompt+" "+theType, selectedText);
      if ((insertText != null) && (insertText != "")) {
        addText("["+theType+"="+theValue+"]"+insertText+"[/"+theType+"]", "", false, theForm);
      }
    }
  }
  else {
    if(addText("["+theType+"="+theValue+"]", "[/"+theType+"]", true, theForm)) {
      pushArray(bbtags, theType);
    }
  }

  theForm.sizeselect.selectedIndex = 0;
  theForm.fontselect.selectedIndex = 0;
  theForm.colorselect.selectedIndex = 0;

  setFocus(theForm);
}


function bbcode(theForm, theTag, promptText) {
  if ( normalMode(theForm) || (bbcode=="IMG")) {
    var selectedText = getSelectedText(theForm);
    if (promptText == '' || selectedText != '') promptText = selectedText;

    inserttext = prompt(tag_prompt + "\n[" + theTag + "]xxx[/" + theTag + "]", promptText);
    if ( (inserttext != null) && (inserttext != "") ) {
      addText("[" + theTag + "]" + inserttext + "[/" + theTag + "]", "", false, theForm);
    }
  }
  else {
    var donotinsert = false;
    for (i = 0; i < bbtags.length; i++) {
      if (bbtags[i] == theTag) donotinsert = true;
    }

    if (!donotinsert) {
      if(addText("[" + theTag + "]", "[/" + theTag + "]", true, theForm)){
        pushArray(bbtags, theTag);
      }
    }
    else {
      var lastindex = 0;

      for (i = 0 ; i < bbtags.length; i++ ) {
        if ( bbtags[i] == theTag ) {
          lastindex = i;
        }
      }

      while (bbtags[lastindex]) {
        tagRemove = popArray(bbtags);
        addText("[/" + tagRemove + "]", "", false, theForm);
      }
    }
  }
}

function namedlink(theForm,theType) {
  var selected = getSelectedText(theForm);

  var linkText = prompt(link_text_prompt,selected);
  var prompttext;

  if (theType == "URL") {
    prompt_text = link_url_prompt;
    prompt_contents = "http://";
  }
  else {
    prompt_text = link_email_prompt;
    prompt_contents = "";
  }

  linkURL = prompt(prompt_text,prompt_contents);


  if ((linkURL != null) && (linkURL != "")) {
    var theText = '';

    if ((linkText != null) && (linkText != "")) {
      theText = "["+theType+"="+linkURL+"]"+linkText+"[/"+theType+"]";
    }
    else {
      theText = "["+theType+"]"+linkURL+"[/"+theType+"]";
    }

    addText(theText, "", false, theForm);
  }
}


function dolist(theForm) {
  listType = prompt(list_type_prompt, "");
  if ((listType == "a") || (listType == "1")) {
    theList = "[list="+listType+"]\n";
    listEend = "[/list="+listType+"] ";
  }
  else {
    theList = "[list]\n";
    listEend = "[/list] ";
  }

  listEntry = "initial";
  while ((listEntry != "") && (listEntry != null)) {
    listEntry = prompt(list_item_prompt, "");
    if ((listEntry != "") && (listEntry != null)) theList = theList+"[*]"+listEntry+"\n";
  }

  addText(theList + listEend, "", false, theForm);
}


function addText(theTag, theClsTag, isSingle, theForm)
{
  var isClose = false;
  var message = theForm.message;
  var set=false;
  var old=false;
  var selected="";

  if(navigator.appName=="Netscape" &&  message.textLength>=0 ) { // mozilla, firebird, netscape
    if(theClsTag!="" && message.selectionStart!=message.selectionEnd) {
      selected=message.value.substring(message.selectionStart,message.selectionEnd);
      str=theTag + selected+ theClsTag;
      old=true;
      isClose = true;
    }
    else {
      str=theTag;
    }

    message.focus();
    start=message.selectionStart;
    end=message.textLength;
    endtext=message.value.substring(message.selectionEnd,end);
    starttext=message.value.substring(0,start);
    message.value=starttext + str + endtext;
    message.selectionStart=start;
    message.selectionEnd=start;

    message.selectionStart = message.selectionStart + str.length;

    if(old) { return false; }

    set=true;

    if(isSingle) {
      isClose = false;
    }
  }
  if ( (myVersion >= 4) && is_ie && is_win) {  // Internet Explorer
    if(message.isTextEdit) {
      message.focus();
      var sel = document.selection;
      var rng = sel.createRange();
      rng.colapse;
      if((sel.type == "Text" || sel.type == "None") && rng != null){
        if(theClsTag != "" && rng.text.length > 0)
          theTag += rng.text + theClsTag;
        else if(isSingle)
          isClose = true;

        rng.text = theTag;
      }
    }
    else{
      if(isSingle) isClose = true;

      if(!set) {
        message.value += theTag;
      }
    }
  }
  else
  {
    if(isSingle) isClose = true;

    if(!set) {
      message.value += theTag;
    }
  }

  message.focus();

  return isClose;
}


function getSelectedText(theForm) {
  var message = theForm.message;
  var selected = '';

  if(navigator.appName=="Netscape" &&  message.textLength>=0 && message.selectionStart!=message.selectionEnd )
    selected=message.value.substring(message.selectionStart,message.selectionEnd);

  else if( (myVersion >= 4) && is_ie && is_win ) {
    if(message.isTextEdit){
      message.focus();
      var sel = document.selection;
      var rng = sel.createRange();
      rng.colapse;

      if((sel.type == "Text" || sel.type == "None") && rng != null){
        if(rng.text.length > 0) selected = rng.text;
      }
    }
  }

  return selected;
}

function setFocus(theForm) {
  theForm.message.focus();
}