// bbCode control by
			// subBlue design
			// www.subBlue.com
			
			// Startup variables
			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_win   = ((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));
			var is_mac    = (clientPC.indexOf("mac")!=-1);
			
			
			// Helpline messages
			b_help = "Bold text: [b]text[/b]  (alt+b)";
			i_help = "Italic text: [i]text[/i]  (alt+i)";
			u_help = "Underline text: [u]text[/u]  (alt+u)";
			q_help = "Quote text: [quote]text[/quote]  (alt+q)";
			c_help = "Code display: [code]code[/code]  (alt+c)";
			l_help = "List: [list]text[/list] (alt+l)";
			o_help = "Ordered list: [list=]text[/list]  (alt+o)";
			p_help = "Insert image: [img]http://image_url[/img]  (alt+p)";
			w_help = "Insert 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.post.helpbox.value = eval(help + "_help");
			}
			
			
			// Replacement for arrayname.length property
			function getarraysize(thearray) {
				for (i = 0; i < thearray.length; i++) {
					if ((thearray[i] == "undefined") || (thearray[i] == "") || (thearray[i] == null))
						return i;
					}
				return thearray.length;
			}
			
			// 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 checkForm() {
			
				formErrors = false;
			
				if (document.post.message.value.length < 2) {
					formErrors = "You must enter a message when posting";
				}
			
				if (formErrors) {
					alert(formErrors);
					return false;
				} else {
					bbstyle(-1);
					//formObj.preview.disabled = true;
					//formObj.submit.disabled = true;
					return true;
				}
			}
			
			function emoticon(text) {
				text = ' ' + text + ' ';
				if (document.post.message.createTextRange && document.post.message.caretPos) {
					var caretPos = document.post.message.caretPos;
					caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
					document.post.message.focus();
				} else {
				document.post.message.value  += text;
				document.post.message.focus();
				}
			}
			
			function bbfontstyle(bbopen, bbclose) {
				if ((clientVer >= 4) && is_ie && is_win) {
					theSelection = document.selection.createRange().text;
					if (!theSelection) {
						document.post.message.value += bbopen + bbclose;
						document.post.message.focus();
						return;
					}
					document.selection.createRange().text = bbopen + theSelection + bbclose;
					document.post.message.focus();
					return;
				} else {
					document.post.message.value += bbopen + bbclose;
					document.post.message.focus();
					return;
				}
				storeCaret(document.post.message);
			}
			
			
			function bbstyle(bbnumber) {
			
				donotinsert = false;
				theSelection = false;
				bblast = 0;
			
				if (bbnumber == -1) { // Close all open tags & default button names
					while (bbcode[0]) {
						butnumber = arraypop(bbcode) - 1;
						document.post.message.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; // All tags are closed including image tags :D
					document.post.message.focus();
					return;
				}
			
				if ((clientVer >= 4) && is_ie && is_win)
					theSelection = document.selection.createRange().text; // Get text selection
			
				if (theSelection) {
					// Add tags around selection
					document.selection.createRange().text = bbtags[bbnumber] + theSelection + bbtags[bbnumber+1];
					document.post.message.focus();
					theSelection = '';
					return;
				}
			
				// Find last occurance of an open tag the same as the one just clicked
				for (i = 0; i < bbcode.length; i++) {
					if (bbcode[i] == bbnumber+1) {
						bblast = i;
						donotinsert = true;
					}
				}
			
				if (donotinsert) {		// Close all open tags up to the one just clicked & default button names
					while (bbcode[bblast]) {
							butnumber = arraypop(bbcode) - 1;
							document.post.message.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;
						}
						document.post.message.focus();
						return;
				} else { // Open tags
			
					if (imageTag && (bbnumber != 14)) {		// Close image tag before adding another
						document.post.message.value += bbtags[15];
						lastValue = arraypop(bbcode) - 1;	// Remove the close image tag from the list
						document.post.addbbcode14.value = "Img";	// Return button back to normal state
						imageTag = false;
					}
			
					// Open tag
					document.post.message.value += bbtags[bbnumber];
					if ((bbnumber == 14) && (imageTag == false)) imageTag = 1; // Check to stop additional tags after an unclosed image tag
					arraypush(bbcode,bbnumber+1);
					eval('document.post.addbbcode'+bbnumber+'.value += "*"');
					document.post.message.focus();
					return;
				}
				storeCaret(document.post.message);
			}
			
			// 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();
			}