/**
  * UNITED-NUKE CMS: Just Manage!
  * http://united-nuke.openland.cz/
  * http://united-nuke.openland.cz/forums/
  *
  * 2002 - 2005, (c) Jiri Stavinoha
  * http://united-nuke.openland.cz/weblog/
  *
  * Portions of this software are based od phpBB subSilver template.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
  * of the License, or (at your option) any later version.
**/


function formatTexy(id) {
	// Startup variables
	var theSelection = false;
	var texyopen = '<!-- Texy! BEGIN -->';
	var texyclose = '<!-- Texy! END -->';
	
	// 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_win = ((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));
	
	//var txtarea = document.post.message;
	var txtarea = document.getElementById(id);
	
	if ((clientVer >= 4) && is_ie && is_win) {
		theSelection = document.selection.createRange().text;
		if (!theSelection) {
			txtarea.value += texyopen + texyclose;
			txtarea.focus();
			return;
		}
		document.selection.createRange().text = texyopen + theSelection + texyclose;
		txtarea.focus();
		return;
	}
	else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))
	{
		mozWrap(txtarea, texyopen, texyclose);
		return;
	}
	else
	{
		txtarea.value += texyopen + texyclose;
		txtarea.focus();
	}
	storeCaret(txtarea);
}

// From http://www.massless.org/mozedit/
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;
}
// Insert at Claret position. Code from
// http://www.faqts.com/knowledge_base/view.phtml/aid/1052/fid/130
function storeCaret(textEl) {
	if (textEl.createTextRange) textEl.caretPos = document.selection.createRange().duplicate();
}