var qc = 0;
var bc = 0;
var uc = 0;
var ic = 0;

function getSelection(ta) {
    if (ta) {
        ta.focus();

        var textAreaContents = {
            completeText: '',
            selectionStart: 0,
            selectionEnd: 0,
            selectionLength: 0,
            textBeforeSelection: '',
            selectedText: '',
            textAfterSelection: ''
        };

        if (ta.selectionStart || ta.selectionStart == '0') {
            textAreaContents.completeText = ta.value;
            textAreaContents.selectionStart = ta.selectionStart;

            if ((ta.selectionEnd - ta.selectionStart) !== 0) {
                while (ta.value.charAt(ta.selectionEnd - 1) == ' ') {
                    ta.selectionEnd--;
                }
            }

            textAreaContents.selectionEnd = ta.selectionEnd;
            textAreaContents.selectionLength = ta.selectionEnd - ta.selectionStart;
            textAreaContents.textBeforeSelection = ta.value.substring(0, ta.selectionStart);

            var st = ta.value.substring(ta.selectionStart, ta.selectionEnd);

            textAreaContents.selectedText = st;
            textAreaContents.textAfterSelection = ta.value.substring(ta.selectionEnd, ta.value.length);
            return textAreaContents;
        }

        else if (document.selection) {
            var tr = document.selection.createRange();

            while (tr.text.charAt(tr.text.length - 1) == ' ') {
                tr.moveEnd('character', -1);
                tr.select();
                tr = document.selection.createRange();
            }

            textAreaContents.completeText = ta.value;
            textAreaContents.selectionStart = 0;
            textAreaContents.selectionEnd = 0;
            textAreaContents.selectionLength = tr.text.length;
            textAreaContents.textBeforeSelection = '';

            var st = tr.text;

            textAreaContents.selectedText = st;
            textAreaContents.textAfterSelection = '';
            return textAreaContents;
        }
    }
}

function clickHandler(ta, openingTag, closingTag, replaceText, counter, fieldCounter, maxLength) {
    if (ta) {
        // link tags 
        if (replaceText) {
            var s = getSelection(ta);
            var newText = (s.selectionLength > 0) ? openingTag.replace(replaceText, s.selectedText) : openingTag;


            // Opera, Mozilla 
            if (ta.selectionStart || ta.selectionStart == '0') {
                var st = ta.scrollTop;
                ta.value = s.textBeforeSelection + newText + s.textAfterSelection;
                ta.scrollTop = st;

                if ((openingTag.indexOf(' ') > 0) && (openingTag.indexOf(' ') < openingTag.length - 1)) {
                    ta.selectionStart = s.selectionStart + openingTag.indexOf('=') + 1;
                    ta.selectionEnd = ta.selectionStart + openingTag.indexOf(' ') - openingTag.indexOf('=') - 1;
                }

                // MessageID 
                else {
                    if (s.selectionLength === 0) {
                        ta.selectionStart = s.selectionStart + openingTag.indexOf('=') + 1;
                        ta.selectionEnd = ta.selectionStart + openingTag.indexOf(']') - openingTag.indexOf('=') - 1;
                    }
                    else {
                        ta.selectionStart = s.selectionStart + newText.length;
                        ta.selectionEnd = ta.selectionStart;
                    }
                }

            }

            // IE 
            else if (document.selection) {
                var IESel = document.selection.createRange();
                IESel.text = newText;

                if ((openingTag.indexOf(' ') > 0) && (openingTag.indexOf(' ') < openingTag.length - 1)) {
                    IESel.moveStart('character', openingTag.indexOf('=') + 1 - newText.length);
                    IESel.moveEnd('character', openingTag.indexOf(' ') - newText.length);
                }

                // MessageID 
                else {
                    if (s.selectionLength === 0) {
                        IESel.moveStart('character', openingTag.indexOf('=') + 1 - newText.length);
                        IESel.moveEnd('character', openingTag.indexOf(']') - newText.length);
                    }
                }

                IESel.select();
            }

            // Others 
            else {
                ta.value += newText;
            }
        }

        // start/end tags 
        else if ((closingTag) && (counter >= 0)) {
            var s = getSelection(ta);
            var newText = (s.selectionLength > 0) ? openingTag + s.selectedText + closingTag : (counter % 2 == 1) ? openingTag : closingTag;

            // Opera, Mozilla 
            if (ta.selectionStart || ta.selectionStart == '0') {
                var st = ta.scrollTop;
                ta.value = s.textBeforeSelection + newText + s.textAfterSelection;
                ta.scrollTop = st;

                ta.selectionStart = s.selectionStart + newText.length;
                ta.selectionEnd = ta.selectionStart;
            }

            // IE 
            else if (document.selection) {
                var IESel = document.selection.createRange();
                IESel.text = newText;
                IESel.select();
            }

            // Others 
            else {
                ta.value += newText;
            }
        }

        // Quote 
        else if ((closingTag) && !(counter)) {
            ta.value = quoteText + '\n' + ta.value;
        }

        // HR 
        else {
            var s = getSelection(ta);

            // Opera, Mozilla 
            if (ta.selectionStart || ta.selectionStart == '0') {
                var st = ta.scrollTop;
                ta.value = s.textBeforeSelection + s.selectedText + openingTag + s.textAfterSelection;
                ta.scrollTop = st;

                ta.selectionStart = s.selectionEnd + openingTag.length;
                ta.selectionEnd = ta.selectionStart;
            }

            // IE 
            else if (document.selection) {
                var IESel = document.selection.createRange();
                IESel.text = s.selectedText + openingTag;
                IESel.select();
            }

            // Others 
            else {
                ta.value += newText;
            }
        }
    }
    textCounter(ta, fieldCounter, maxLength);
}
function insertQuoteAll(form, text, fieldCounter, maxLength) {
    clickHandler(form, text, null, null, null, fieldCounter, maxLength);
}
function insertQuote(form, fieldCounter, maxLength) {
    if (getSelection(form).selectionLength === 0) {
        qc++;
    }
    clickHandler(form, '[q]', '[/q]', null, qc, fieldCounter, maxLength);
}
function insertBold(form, fieldCounter, maxLength) {
    if (getSelection(form).selectionLength === 0) {
        bc++;
    }
    clickHandler(form, '[b]', '[/b]', null, bc, fieldCounter, maxLength);
}
function insertUnderline(form, fieldCounter, maxLength) {
    if (getSelection(form).selectionLength === 0) {
        uc++;
    }
    clickHandler(form, '[u]', '[/u]', null, uc, fieldCounter, maxLength);
}
function insertItalic(form, fieldCounter, maxLength) {
    if (getSelection(form).selectionLength === 0) {
        ic++;
    }
    clickHandler(form, '[i]', '[/i]', null, ic, fieldCounter, maxLength);
}
function insertNewline(form, fieldCounter, maxLength) {
    clickHandler(form, '[br]', null, null, null, fieldCounter, maxLength);
}
function insertRuler(form, fieldCounter, maxLength) {
    clickHandler(form, '[hr]', null, null, null, fieldCounter, maxLength);
}
function insertPlayerID(form, fieldCounter, maxLength) {
    clickHandler(form, '[playerid=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}
function insertTeamID(form, fieldCounter, maxLength) {
    clickHandler(form, '[teamid=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}
function insertMatchID(form, fieldCounter, maxLength) {
    clickHandler(form, '[matchid=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}
function insertLeagueID(form, fieldCounter, maxLength) {
    clickHandler(form, '[leagueid=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}
function insertFederationID(form, fieldCounter, maxLength) {
    clickHandler(form, '[federationid=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}
function insertMessage(form, fieldCounter, maxLength) {
    clickHandler(form, '[post=xxx.yy]', null, 'xxx.yy', null, fieldCounter, maxLength);
}
function insertLink(form, fieldCounter, maxLength) {
    clickHandler(form, '[link=xxx]', null, 'xxx', null, fieldCounter, maxLength);
}

function showAT(elem) {
    document.getElementById(elem).style.display = 'block';
}

function hideAT(elem) {
    document.getElementById(elem).style.display = 'none';
}