// 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 = "{L_BBCODE_B_HELP}";
i_help = "{L_BBCODE_I_HELP}";
u_help = "{L_BBCODE_U_HELP}";
q_help = "{L_BBCODE_Q_HELP}";
c_help = "{L_BBCODE_C_HELP}";
l_help = "{L_BBCODE_L_HELP}";
o_help = "{L_BBCODE_O_HELP}";
p_help = "{L_BBCODE_P_HELP}";
w_help = "{L_BBCODE_W_HELP}";
a_help = "{L_BBCODE_A_HELP}";
s_help = "{L_BBCODE_S_HELP}";
f_help = "{L_BBCODE_F_HELP}";

// 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 = "{L_EMPTY_MESSAGE}";
	}

	if (formErrors) {
		alert(formErrors);
		return false;
	} else {
		bbstyle(-1);
		//formObj.preview.disabled = true;
		//formObj.submit.disabled = true;
		return true;
	}
}

function emoticon(text) {
	text = ' ' + text + ' ';
	var post = document.getElementById('post');
	var editor = post.message;

		/* Internet Explorer */
	if(typeof document.selection != 'undefined') {
		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();
		}

		/* Gecko */
	} else if(typeof editor.selectionStart != 'undefined') {
		start	= editor.selectionStart;
		end		= editor.selectionEnd;

		editor.value = editor.value.substr(0, start) + text + editor.value.substr(end);

		editor.focus();
		editor.selectionStart = end + text.length;
		editor.selectionEnd = editor.selectionStart;

		/* Other */
	} else {
		editor.value += text;
		editor.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();
}

// Creates a new Request for the AJAX function
function createRequestObject() 
{
    var req;
    try
    {
        req = new ActiveXObject("MSXML2.XMLHTTP");
    }
    catch (err_MSXML2)
    {
        try
        {
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (err_Microsoft)
        {
            if (typeof XMLHttpRequest != "undefined")
                req = new XMLHttpRequest;
        }
    }
    return req;
}

Function.prototype.bind = function(object)
{
    var __method = this;
    return function()
    {
        return __method.apply(object, arguments);
    }
}


//Refresh the selected DIV with new userlist


function closeSearch(id)
{
    document.forms['write_newPM'].elements['tx_mmforum_pi3[user]'].value= id;
    document.getElementById('tx_mmforum_pi3_quicksearch').style.display = 'none';
}

  function hoverthis(obj)
  {
    for(var i =0;i<obj.childNodes.length;i++)
    {
       if(i>1 && (obj.childNodes[i]).nodeType==1) 
       obj.childNodes[i].style.backgroundColor='#f8f8f8';
    }
  }
  
  
  function unhoverthis(obj)
  {
     for(var i =0;i<obj.childNodes.length;i++)
    {
       if(i>1 && (obj.childNodes[i]).nodeType==1)
       obj.childNodes[i].style.backgroundColor='#FFFFFF';
    } 
  }

var request;