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);

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;

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
mustInitImg = true;


function BigImage(ID) {
	SmallWin=window.open("big.php?ID=" + ID,"SmallWin","toolbar=no,resizable=1,directories=no,status=yes,scrollbars=yes,menubar=no,width=800,height=600"); SmallWin.window.focus()
}

function ClosePost(ID, tue) {
	SmallWin=window.open("close_post.php?ID=" + ID + "&do=" + tue,"SmallWin","toolbar=no,directories=no,status=yes,scrollbars=yes,menubar=no,width=200,height=50"); SmallWin.window.focus()
}

function BigImage2(ID) {
	SmallWin=window.open("big2.php?ID=" + ID,"SmallWin","toolbar=no,directories=no,status=yes,scrollbars=yes,menubar=no,width=800,height=600"); SmallWin.window.focus()
}

// Shows the help messages in the helpline window
function helpline(help) {
	document.message.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;
}

function emoticon(text) {
	var txtarea = document.main_form.coment;
	text = ' ' + text + ' ';
	if (txtarea.createTextRange && txtarea.caretPos) {
		var caretPos = txtarea.caretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? caretPos.text + text + ' ' : caretPos.text + text;
		txtarea.focus();
	} else {
		txtarea.value  += text;
		txtarea.focus();
	}
}

// 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 msgstyle(bbnumber) {
	var txtarea = document.main_form.coment;

	txtarea.focus();
	donotinsert = false;
	theSelection = false;
	bblast = 0;

	if (bbnumber == -1) { // Close all open tags & default button names
		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; // All tags are closed including image tags :D
		txtarea.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];
			txtarea.focus();
			theSelection = '';
			return;
		}
	}
	else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))
	{
		mozWrap(txtarea, bbtags[bbnumber], bbtags[bbnumber+1]);
		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;
				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 { // Open tags

		if (imageTag && (bbnumber != 14)) {		// Close image tag before adding another
			txtarea.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
		txtarea.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 += "*"');
		txtarea.focus();
		return;
	}
	storeCaret(txtarea);
}

function check_ID() {
	document.main_form.check_id.value=1;
	document.main_form.submit();
}

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

function centerWin(url) {
	xpos = (screen.availWidth-(screen.width-screen.availWidth)-1024) / 2;
	ypos = (screen.availHeight-(screen.height-screen.availHeight)-768) / 2;
	if (ypos >= 0) {
		ylength=739;
	} else {
		ylength=739+ypos;
		ypos=0;
	}
	param = "width=1014,height="+ylength+",left="+xpos+",top="+ypos;
	param += ",scrollbars=0,resizable=0,location=0";
	param += ",menubar=0,toolbar=0,status=0";
	window.open(url,"", param);
}

function clearValue(obj) {
      obj.value="";
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function initImgID() {
	di = document.images;
	if (mustInitImg && di) {
		for (var i=0; i < di.length; i++) {
			if (!di[i].id) di[i].id=di[i].name;
		} mustInitImg = false;
	}
}

function findElement(n,ly) {
	d = document;
	if (browserVers < 4)
		return d[n];
	if ((browserVers >= 6) && (d.getElementById)) {
		initImgID;
		return(d.getElementById(n))
	};
	var cd = ly ? ly.document : d;
	var elem = cd[n];
	if (!elem) {
		for (var i=0;i < cd.layers.length;i++) {
			elem = findElement(n,cd.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

function changeImages() {
	d = document;
	if (d.images) {
		var img;
		for (var i=0; i < changeImages.arguments.length; i+=2) {
			img = null;
			if (d.layers) {img = findElement(changeImages.arguments[i],0);}
			else {img = d.images[changeImages.arguments[i]];}
			if (img) {img.src = changeImages.arguments[i+1];}
		}
	}
}

function hl_on (obj, img){
	obj = document.getElementById(obj);
	obj.src = img;
}

function hl_off (obj, img){
	obj = document.getElementById(obj);
	obj.src = img;
}

function prepareOnInit			(pParent)
{
  var pChild;
  var i;

  if 							(!pParent)
  {
    pParent						= document.getElementsByTagName("body");

    if							(!pParent)
    {
      return
    }
    pParent						= pParent[0];
  }
  pChild						= pParent.firstChild;


  while							(pChild != null)
  {
    if							(pChild.attributes)
    {
      oninit					= pChild.getAttribute ("oninit");

      if 						(oninit)
      {
		pChild.oninit			= new Function (oninit);
		pChild.oninit			();
	  }
	}

	if							(pChild.firstChild)
	{
	  prepareOnInit				(pChild);
	}
	pChild						= pChild.nextSibling;
  }
}