// Help out old versions of IE that don't understand element.style.cursor = 'pointer'
var pointer_cursor = (is_ie ? 'hand' : 'pointer');

/**
* Pop function for browsers that don't have it built in
* @param	array	Array from which to pop
* @return	mixed	null on empty, value on success
*/
function arrayPop(a) {
	if (typeof a != 'object' || !a.length) {
		return null;
	} else {
		var response = a[a.length - 1];
		a.length--;
		return response;
	}
}

if (typeof Array.prototype.shift === 'undefined')
{
	Array.prototype.shift = function()
	{
		for(var i = 0, b = this[0], l = this.length-1; i < l; i++)
		{
			this[i] = this[i + 1];
		}
		this.length--;
		return b;
	};
}

/**
* Push function for browsers that don't have it built in
* @param	array	Array onto which to push
* @param	mixed	Value to push onto array
* @return	integer	Length of array
*/
function arrayPush(a, value) {
	a[a.length] = value;
	return a.length;
}


/**
* Handles the different event models of different browsers and prevents event bubbling
* @param	event	Event object
* @return	event
*/
function doAnEvent(eventobj) {
	if (!eventobj || is_ie)	{
		window.event.returnValue = false;
		window.event.cancelBubble = true;
		return window.event;
	} else {
		eventobj.stopPropagation();
		eventobj.preventDefault();
		return eventobj;
	}
}

/**
* Handles the different event models of different browsers and prevents event bubbling in a lesser way than doAnEvent()
* @param	event	Event object
* @return	event
*/
function eventWay(eventobj) {
	if (!eventobj || is_ie) {
		window.event.cancelBubble = true;
		return window.event;
	} else {
		if (eventobj.target.type == 'submit') {
			// naughty safari
			eventobj.target.form.submit();
		}
		eventobj.stopPropagation();
		return eventobj;
	}
}

/**
* Strips quotes and bbcode tags from text
*
* @param	string	Text to manipulate
* @param	boolean	If true, strip <x> otherwise strip [x]
* @param	boolean	If true, strip all [quote]...contents...[/quote]
*
* @return	string
*/
function stripcode(str, ishtml, stripquotes)
{
	if (!is_regexp)
	{
		return str;
	}

	if (stripquotes)
	{
		var start_time = new Date().getTime();

		while ((startindex = PHP.stripos(str, '[quote')) !== false)
		{
			if (new Date().getTime() - start_time > 2000)
			{
				// while loop has been running for over 2 seconds and has probably gone infinite
				break;
			}

			if ((stopindex = PHP.stripos(str, '[/quote]')) !== false)
			{
				fragment = str.substr(startindex, stopindex - startindex + 8);
				str = str.replace(fragment, '');
			}
			else
			{
				break;
			}
			str = PHP.trim(str);
		}
	}

	if (ishtml)
	{
		// exempt image tags -- they need to count as characters in the string
		// as the do as BB codes
		str = str.replace(/<img[^>]+src="([^"]+)"[^>]*>/gi, '$1');

		var html1 = new RegExp("<(\\w+)[^>]*>", 'gi');
		var html2 = new RegExp("<\\/\\w+>", 'gi');

		str = str.replace(html1, '');
		str = str.replace(html2, '');

		var html3 = new RegExp('(&nbsp;)', 'gi');
		str = str.replace(html3, ' ');
	}
	else
	{
		var bbcode1 = new RegExp("\\[(\\w+)[^\\]]*\\]", 'gi');
		var bbcode2 = new RegExp("\\[\\/(\\w+)\\]", 'gi');

		str = str.replace(bbcode1, '');
		str = str.replace(bbcode2, '');
	}

	return str;
}

/**
* Opens a generic browser window
*
* @param	string	URL
* @param	integer	Width
* @param	integer	Height
* @param	string	Optional Window ID
*/
function openWindow(url, width, height, windowid) {
	return window.open(
		url,
		(typeof windowid == 'undefined' ? 'forums_popup' : windowid),
		'statusbar=no,menubar=no,toolbar=no,scrollbars=yes,resizable=yes'
		+ (typeof width != 'undefined' ? (',width=' + width) : '') + (typeof height != 'undefined' ? (',height=' + height) : '')
	);
}



/**
* Resize function for CP textareas
*
* @param	integer	If positive, size up, otherwise size down
* @param	string	ID of the textarea
*
* @return	boolean	false
*/
function resize_textarea(to, id)
{
	if (to < 0)
	{
		var rows = -5;
		var cols = -10;
	}
	else
	{
		var rows = 5;
		var cols = 10;
	}

	var textarea = fetch_object(id);
	if (typeof textarea.orig_rows == 'undefined')
	{
		textarea.orig_rows = textarea.rows;
		textarea.orig_cols = textarea.cols;
	}

	var newrows = textarea.rows + rows;
	var newcols = textarea.cols + cols;

	if (newrows >= textarea.orig_rows && newcols >= textarea.orig_cols)
	{
		textarea.rows = newrows;
		textarea.cols = newcols;
	}

	return false;
}


function forumsInit()
{
	// don't bother doing any exciting stuff for WebTV
	if (is_webtv) {
		return false;
	}

	// finalize popup menus
	if (typeof forumsMenu == 'object') {
		// close all menus on document click
		if (window.attachEvent && !is_saf) {
			document.attachEvent('onclick', menuHide);
			window.attachEvent('onresize', menuHide);
		} else if (document.addEventListener && !is_saf) {
			document.addEventListener('click', menuHide, false);
			window.addEventListener('resize', menuHide, false);
		} else {
			window.onclick = menuHide;
			window.onresize = menuHide;
		}
		// activate the menu system
		forumsMenu.activate(true);
	}
	return true;
}