$.fn.typewriter = function(opt,callback) {
	var i=0;
	var typeone = function(self, text, content) {
			if (text.length > 0) {
					i=i+1;
					var next = text.match(/(\s*(<[^>]*>)?)*(&.*?;|.?)/)[0];
					text = text.substr(next.length);
					$(self).html(content+next);
					setTimeout(function(){
							typeone(self, text, content+next);
					}, opt['delay']);
					if(text.length==0) if (callback!=null) callback();
			}
	}
	this.each(function() {
			opt = opt || { 'delay': 105 };
			typeone(this, $(this).html(), '');
	});
	return this;
}