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

                switch (theTag) {
        default: inserttext = prompt(((theTag == "IMG") ? (img_prompt) : (tag_prompt)) + "\n[" + theTag + "]xxx[/" + theTag + "]", promptText); break;
        case 'youtube': inserttext = prompt(youtube_prompt + "\n[" + theTag + "]Ihre YouTube ID[/" + theTag + "]", promptText); break;
}
                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(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();
}