/*************************************************************
 *    SXBB - Select Expand BBcodes MOD v1.0.2
 *
 *    Copyright (C) 2004, Markus (http://www.phpmix.com)
 *    This script is released under GPL License.
 *    Feel free to use this script (or part of it) wherever you need
 *    it ...but please, give credit to original author. Thank you. :-)
 *    We will also appreciate any links you could give us.
 *
 *    Enjoy! ;-)
 *
 *************************************************************/

//
// ADVICE: Editor Settings -> TabSize 4 ;-)
//

function SXBB_IsIEMac()
{
    // Any better way to detect IEMac?
    var ua = String(navigator.userAgent).toLowerCase();
    if( document.all && ua.indexOf("mac") >= 0 )
        return true;
    return false;
}

function SXBB_IsOverflowAble()
{
    // Reliable overflow usage seems to require correct DOM support with some exceptions:
    // - Opera5/6 renders 'auto' as if it was 'visible'. Bang!
    // - IEMac seems to be buggy in some circumstances:
    //   http://sonofhans.net/mac_ie5_bug/
    //
    if( document.getElementById && document.childNodes && !SXBB_IsIEMac() )
        return true;
    return false;
}

function _SXBB(id)
{
    this.id = id;
    this.size = this.min = 40;     // --- Adjust MINIMUM_BLOCK_HEIGHT here :-)
    this.extra = 5;                // --- This is added to height when expanded
    this.margin = 20;              // --- Hide [expand] command if just a few pixels height when expanded.
    this.T = [];
}
_SXBB.prototype.genCmd = function(cmd, txt)
{
    return '&nbsp;&lt;&nbsp;<a class="genmed" style="text-decoration:none;" href="javascript:void(0)" onclick="SXBB[\''+this.id+'\'].'+cmd+'(\''+txt+'\');" onfocus="this.blur();"><strong>'+txt+'</strong></a>&nbsp;&gt;';
}
_SXBB.prototype.writeCmd = function()
{
    var s='';
    if( (document.selection && !SXBB_IsIEMac()) || (document.createRange && (document.getSelection || window.getSelection)) )
    {
        s += this.genCmd('select', this.T['select']);
    }
    if( SXBB_IsOverflowAble() )
    {
        // Actually, the [expand] link will be placed by the onload event (if necessary) :-)
        s += '<span id="'+this.id+'x"></span>';
    }
    document.write(s);    // ‹Select› ‹Expand›
}
_SXBB.prototype.writeDiv = function()
{
    // Use 'overflow:auto;height:#px' only if 'overflow:auto' is supported...
    // Works on IE4+, Mozilla, Opera7, Safari
    // Fails on IEMac, NS4, Opera6-
    //
    var s = ( SXBB_IsOverflowAble() ? 'style="overflow:auto;height:'+this.min+'px;"' : '' );
    document.write('<div id="'+this.id+'" '+s+'>');
}
_SXBB.prototype.getObj = function(id)
{
    return ( document.getElementById ? document.getElementById(id) : null );
}
_SXBB.prototype.select = function()
{
    var o = this.getObj(this.id);
    if( !o ) return;
    var r, s;
    if( document.selection && !SXBB_IsIEMac() )
    {
        // Works on: IE5+
        // To be confirmed: IE4? / IEMac fails?
        r = document.body.createTextRange();
        r.moveToElementText(o);
        r.select();
    }
    else if( document.createRange && (document.getSelection || window.getSelection) )
    {
        // Works on: Netscape/Mozilla/Konqueror/Safari
        // To be confirmed: Konqueror/Safari use window.getSelection ?
        r = document.createRange();
        r.selectNodeContents(o);
        s = window.getSelection ? window.getSelection() : document.getSelection();
        s.removeAllRanges();
        s.addRange(r);
    }
}
_SXBB.prototype.resize = function(cmd)
{
    var o = this.getObj(this.id);
    if( !o ) return;
    var x = this.getObj(this.id+'x');
    if( !x ) return;

    // First, deal with requested command...
    if( cmd == 'onload' || cmd == 'onresize' )
    {
        if( o.scrollHeight <= this.min ) { x.innerHTML = ''; return; }
        if( x.innerHTML != '' ) return;
        if( cmd == 'onload' )
        {
            x.innerHTML = this.genCmd('resize', this.T['expand']);
            return;
        }
        cmd = this.T['contract'];
    }
    if( cmd == this.T['expand'] )
    {
        this.size = o.scrollHeight + this.extra;
        o.style.height = 'auto';
        o.style.overflow = 'visible';
        // Check to conditionally hide the [expand] link, if once expanded, adding [contract] is not really useful.
        x.innerHTML = ( (o.scrollHeight-this.margin) > this.min ? this.genCmd('resize', this.T['contract']) : '' );
    }
    else
    {
        this.size = this.min;
        o.style.height = this.size + 'px';
        o.style.overflow = 'auto';
        x.innerHTML = this.genCmd('resize', this.T['expand']);
    }
    if( cmd != 'onresize' )
    {
        // If necessary, adjust height of outer blocks...
        if( o.parentNode ) for( o = o.parentNode; o.parentNode; o = o.parentNode )
        {
            if( o.tagName && o.tagName == 'DIV' && o.id && o.id.indexOf('SXBB') == 0 )
            {
                if( !document.all ) SXBB[o.id].resize(this.T['contract']);
                SXBB[o.id].resize(this.T['expand']);
            }
        }
    }
    return false;
}

// --------------------------------------------------------------------------------
// Actually, this script is being included for every instance of a boxed BBCode,
// so... we MUST do something to ensure we only do the job just once!
//
if( typeof(SXBB) == 'undefined' ) {
// --------------------------------------------------------------------------------

var SXBB = [];

// --------------------------------------------------------------------------------
if( SXBB_IsOverflowAble() ) {    // The following is Not necessary on some browsers!
// --------------------------------------------------------------------------------

var SXBB_oldOnLoad = null;
var SXBB_oldOnResize = null;

function SXBB_onLoad()
{
    if( SXBB_oldOnLoad ) { SXBB_oldOnLoad(); SXBB_oldOnLoad = null; }
    SXBB_evalSize('onload');
}

function SXBB_onResize()
{
    if( SXBB_oldOnResize ) { SXBB_oldOnResize(); SXBB_oldOnResize = null; }
    SXBB_evalSize('onresize');
}

function SXBB_evalSize(cmd)
{
    for( var id in SXBB ) SXBB[id].resize(cmd);
}

if( window.addEventListener )
{
    // The DOM method
    window.addEventListener('load', SXBB_onLoad, false);
    window.addEventListener('resize', SXBB_onResize, false);
}
else if( window.attachEvent )
{
    // The IE Method
    window.attachEvent('onload', SXBB_onLoad);
    window.attachEvent('onresize', SXBB_onResize);
}
else
{
    // The 'legacy' method
    SXBB_oldOnLoad = window.onload;
    SXBB_oldOnResize = window.onresize;
    window.onload = SXBB_onLoad;
    window.onresize = SXBB_onResize;
}

// --------------------------------------------------------------------------------
}    // if( SXBB_IsOverflowAble() )
// --------------------------------------------------------------------------------
}    // if( typeof(SXBB) == 'undefined' )
// --------------------------------------------------------------------------------