// 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);


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


// 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 bbfontstyle(bbopen, bbclose) {
	if ((clientVer >= 4) && is_ie && is_win) {
		theSelection = document.selection.createRange().text;
		if (!theSelection) {
			document.getElementById('bericht').value += bbopen + bbclose;
			document.getElementById('bericht').focus();
			return;
		}
		document.selection.createRange().text = bbopen + theSelection + bbclose;
		document.getElementById('bericht').focus();
		return;
	} else {
		document.getElementById('bericht').value += bbopen + bbclose;
		document.getElementById('bericht').focus();
		return;
	}
}


function bbstyle(bbnumber) {

	donotinsert = false;
	bblast = 0;
	if(document.getElementById('bericht').value == document.getElementById('bericht').begin)
	{
		document.getElementById('bericht').value = ' ';
	}

	if (bbnumber == -1) { // Close all open tags & default button names
		while (bbcode[0]) {
			butnumber = arraypop(bbcode) - 1;
			document.getElementById('bericht').value += bbtags[butnumber + 1];
			buttext = eval('document.getElementById(\'addbbcode' + butnumber + '\').value');
			eval('document.getElementById(\'addbbcode' + butnumber + '\').value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
		}
		imageTag = false; // All tags are closed including image tags :D
		document.getElementById('bericht').focus();
		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.getElementById('bericht').value += bbtags[butnumber + 1];
				buttext = eval('document.getElementById(\'addbbcode' + butnumber + '\').value');
				eval('document.getElementById(\'addbbcode' + butnumber + '\').value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
				imageTag = false;
			}
			document.getElementById('bericht').focus();
			return;
	} else { // Open tags
	
		if (imageTag && (bbnumber != 6)) {		// Close image tag before adding another
			document.getElementById('bericht').value += bbtags[7];
			lastValue = arraypop(bbcode) - 1;	// Remove the close image tag from the list
			document.getElementById('addbbcode6').value = "Img";	// Return button back to normal state
			imageTag = false;
		}
		
		// Open tag
		document.getElementById('bericht').value += bbtags[bbnumber];
		if ((bbnumber == 6) && (imageTag == false)) imageTag = 1; // Check to stop additional tags after an unclosed image tag
		arraypush(bbcode,bbnumber+1);
		eval('document.getElementById(\'addbbcode'+bbnumber+'\').value += "*"');
		document.getElementById('bericht').focus();
		return;
	}
}