var allowedtags=['a', 'abbr', 'acronym', 'b', 'blockquote', 'cite', 'code', 'del', 'em', 'i', 'q', 's', 'strike', 'strong'];

function wptexturize(text) {
	text = ' '+text+' ';
	var next 	= true;
	var output 	= '';
	var prev 	= 0;
	var length 	= text.length;
	var tagsre = new RegExp('^/?(' + allowedtags.join('|') + ')\\b', 'i');
	while ( prev < length ) {
		var index = text.indexOf('<', prev);
		if ( index > -1 ) {
			if ( index == prev ) {
				index = text.indexOf('>', prev);
			}
			index++;
		} else {
			index = length;
		}
		var s = text.substring(prev, index);
		prev = index;
		if (output.match(/<$/) && !s.match(tagsre)) {
			// jwz: omit illegal tags
			output = output.replace(/<$/, ' ');
			s = s.replace(/^[^>]*(>|$)/, '');
		} else if ( s.substr(0,1) != '<' && next == true ) {
			s = s.replace(/---/g, '&#8212;');
			s = s.replace(/--/g, '&#8211;');
			s = s.replace(/\.{3}/g, '&#8230;');
			s = s.replace(/``/g, '&#8220;');
			s = s.replace(/'s/g, '&#8217;s');
			s = s.replace(/'(\d\d(?:&#8217;|')?s)/g, '&#8217;$1');
			s = s.replace(/([\s"])'/g, '$1&#8216;');
			s = s.replace(/([^\s])'([^'\s])/g, '$1&#8217;$2');
			s = s.replace(/(\s)"([^\s])/g, '$1&#8220;$2');
			s = s.replace(/"(\s)/g, '&#8221;$1');
			s = s.replace(/'(\s|.)/g, '&#8217;$1');
			s = s.replace(/\(tm\)/ig, '&#8482;');
			s = s.replace(/\(c\)/ig, '&#169;');
			s = s.replace(/\(r\)/ig, '&#174;');
			s = s.replace(/''/g, '&#8221;');
			s = s.replace(/(\d+)x(\d+)/g, '$1&#215;$2');
		} else if ( s.substr(0,5) == '<code' ) {
			next = false;
		} else {
			next = true;
		}
		output += s; 
	}
	return output.substr(1, output.length-2);	
}

function wpautop(p) {
	p = p + '\n\n';
	p = p.replace(/(<blockquote[^>]*>)/g, '\n$1');
	p = p.replace(/(<\/blockquote[^>]*>)/g, '$1\n');
	p = p.replace(/\r\n/g, '\n');
	p = p.replace(/\r/g, '\n');
	p = p.replace(/\n\n+/g, '\n\n');
	p = p.replace(/\n?(.+?)(?:\n\s*\n)/g, '<p>$1</p>');
	p = p.replace(/<p>\s*?<\/p>/g, '');
	p = p.replace(/<p>\s*(<\/?blockquote[^>]*>)\s*<\/p>/g, '$1');
	p = p.replace(/<p><blockquote([^>]*)>/ig, '<blockquote$1><p>');
	p = p.replace(/<\/blockquote><\/p>/ig, '<p></blockquote>');	
	p = p.replace(/<p>\s*<blockquote([^>]*)>/ig, '<blockquote$1>');
	p = p.replace(/<\/blockquote>\s*<\/p>/ig, '</blockquote>');	
	p = p.replace(/\s*\n\s*/g, '<br />');
	return p;
}

function updateLivePreview() {
	
	var cmntArea = document.getElementById('comment');
	
	if( cmntArea != null )
		var cmnt = wpautop(wptexturize(cmntArea.value));
	else
		var cmnt = '';

        document.getElementById('commentPreview').innerHTML = '		<div class="comment-preview-box">			<ol class="commentlist">				<li id="comment-preview">					<div aria-live="polite">					' + cmnt + '					</div>				</li>			</ol>		</div>';
}

function initLivePreview() {
	if(!document.getElementById)
		return false;

	var cmntArea = document.getElementById('comment');
	
	if ( cmntArea )
		cmntArea.onkeyup = updateLivePreview;
}

//========================================================
// Event Listener by Scott Andrew - http://scottandrew.com
// edited by Mark Wubben, <useCapture> is now set to false
//========================================================
function addEvent(obj, evType, fn){
	if(obj.addEventListener){
		obj.addEventListener(evType, fn, false); 
		return true;
	} else if (obj.attachEvent){
		var r = obj.attachEvent('on'+evType, fn);
		return r;
	} else {
		return false;
	}
}

addEvent(window, "load", initLivePreview);