// Helpline messages

var imageTag = false;
var theSelection = false;

// Check for Browser & Platform for PC & IE specific bits
// More details from: http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var clientVer = parseInt(navigator.appVersion); // Get browser version

var is_ie = ((clientPC.indexOf("msie") != -1) && (clientPC.indexOf("opera") == -1));
var is_nav = ((clientPC.indexOf('mozilla')!=-1) && (clientPC.indexOf('spoofer')==-1)
 && (clientPC.indexOf('compatible') == -1) && (clientPC.indexOf('opera')==-1)
 && (clientPC.indexOf('webtv')==-1) && (clientPC.indexOf('hotjava')==-1));
var is_moz = 0;

var is_win = ((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));
var is_mac = (clientPC.indexOf("mac")!=-1);

// Replacement for arrayname.push(value) not implemented in IE until version 5.5
// Appends element to the array
function arraypush(thearray,value) {
 thearray[ getarraysize(thearray) ] = value;
}

// Replacement for arrayname.pop() not implemented in IE until version 5.5
// Removes and returns the last element of an array
function arraypop(thearray) {
 thearraysize = getarraysize(thearray);
 retval = thearray[thearraysize - 1];
 delete thearray[thearraysize - 1];
 return retval;
}

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 bbfontstyle(bbopen, bbclose) {
    var txtarea = document.post.message;
    if (clientVer >= 4 && is_ie && is_win) {
        theSelection = document.selection.createRange().text;
        if (!theSelection) {
            txtarea.value += bbopen + bbclose;
            txtarea.focus();
            return;
        }
        document.selection.createRange().text = bbopen + theSelection + bbclose;
        txtarea.focus();
        return;
    } else if (txtarea.selectionEnd &&
        txtarea.selectionEnd - txtarea.selectionStart > 0) {
        mozWrap(txtarea, bbopen, bbclose);
        return;
    } else {
        txtarea.value += bbopen + bbclose;
        txtarea.focus();
    }
    storeCaret(txtarea);
}

function mozWrap(txtarea, open, close) {
    var selLength = txtarea.textLength;
    var selStart = txtarea.selectionStart;
    var selEnd = txtarea.selectionEnd;
    if (selEnd == 1 || selEnd == 2) {
        selEnd = selLength;
    }
    var s1 = txtarea.value.substring(0, selStart);
    var s2 = txtarea.value.substring(selStart, selEnd);
    var s3 = txtarea.value.substring(selEnd, selLength);
    txtarea.value = s1 + open + s2 + close + s3;
    return;
}

function storeCaret(textEl) {
    if (textEl.createTextRange) {
        textEl.caretPos = document.selection.createRange().duplicate();
    }
}

b_help = "Bold Text: [b]Text[/b] (alt+b)";
i_help = "Italic Text: [i]Text[/i] (alt+i)";
u_help = "Underlined Text: [u]Text[/u] (alt+u)";
q_help = "Quote: [quote]Text[/quote] (alt+q)";
c_help = "Code: [code]Code[/code] (alt+c)";
l_help = "List: [list]Text[/list] (alt+l)";
o_help = "Ordered List: [list=]Text[/list] (alt+o)";
p_help = "Image: [img]http://image_url[/img] (alt+p)";
w_help = "URL: [url]http://URL[/url] or [url=http://url]URL Text[/url] (alt+w)";
a_help = "Close all open bbcode tags";
s_help = "Font Color: [color=red]Text[/color] Tip: You can also use color=#FF0000";
f_help = "Font Size: [size=x-small]Small Text[/size]";

// Define the bbCode tags
bbcode = new Array();
bbtags = new Array('[b]','[/b]','[i]','[/i]','[u]','[/u]','[quote]','[/quote]','[code]','[/code]','[list]','[/list]','[list=]','[/list]','[img]','[/img]','[url]','[/url]');
imageTag = false;

// Shows the help messages in the helpline window
function helpline(help) {
 document.getElementById("helpbox").value = eval(help + "_help");
}

function insertUrl(url, title){
    var txtarea = document.post.message;
    txtarea.focus();
	var insert = "[url="+url+"]"+title+"[/url]";

	if(txtarea.createTextRange && txtarea.caretPos) {
        var caretPos = txtarea.caretPos;
        caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? insert + ' ' : insert;
    }
    else
    {
        txtarea.value = txtarea.value + insert;
    }
}

function insertUrlFromCombo(combo, url){
	var idx = combo.selectedIndex;
	var id = combo.options[idx].value;
	var title = combo.options[idx].innerHTML;
	url = url + id;
	if (id!=0)
	insertUrl(url, title);
	combo.selectedIndex=0;
}

function bbstyle(bbnumber) {
	
    var txtarea = document.post.message;
    txtarea.focus();
    donotinsert = false;
    theSelection = false;
    bblast = 0;
    if (bbnumber == -1) {
        while (bbcode[0]) {
            butnumber = arraypop(bbcode) - 1;
            txtarea.value += bbtags[butnumber + 1];
            buttext = eval("document.post.addbbcode" + butnumber + ".value");
            eval("document.post.addbbcode" + butnumber + ".value =\"" + buttext.substr(0, buttext.length - 1) + "\"");
        }
        imageTag = false;
        txtarea.focus();
        return;
    }
    if (clientVer >= 4 && is_ie && is_win) {
        theSelection = document.selection.createRange().text;
        if (theSelection) {
            document.selection.createRange().text = bbtags[bbnumber] + theSelection + bbtags[bbnumber + 1];
            txtarea.focus();
            theSelection = "";
            return;
        }
    } else if (txtarea.selectionEnd &&
        txtarea.selectionEnd - txtarea.selectionStart > 0) {
        mozWrap(txtarea, bbtags[bbnumber], bbtags[bbnumber + 1]);
        return;
    }
    for (i = 0; i < bbcode.length; i++) {
        if (bbcode[i] == bbnumber + 1) {
            bblast = i;
            donotinsert = true;
        }
    }
    if (donotinsert) {
        while (bbcode[bblast]) {
            butnumber = arraypop(bbcode) - 1;
            txtarea.value += bbtags[butnumber + 1];
            buttext = eval("document.post.addbbcode" + butnumber + ".value");
            eval("document.post.addbbcode" + butnumber + ".value =\"" + buttext.substr(0, buttext.length - 1) + "\"");
            imageTag = false;
        }
        txtarea.focus();
        return;
    } else {
        if (imageTag && bbnumber != 14) {
            txtarea.value += bbtags[15];
            lastValue = arraypop(bbcode) - 1;
            document.post.addbbcode14.value = "Img";
            imageTag = false;
        }
        txtarea.value += bbtags[bbnumber];
        if (bbnumber == 14 && imageTag == false) {
            imageTag = 1;
        }
        arraypush(bbcode, bbnumber + 1);
        eval("document.post.addbbcode" + bbnumber + ".value += \"*\"");
        txtarea.focus();
        return;
    }
    storeCaret(txtarea);
}