function noticeBox(listObj, listElem, speed, nonStop){
	var pos, top, aniTop, height;
	var id = '';
	
	pos = listObj.position();	
	top = pos.top;
	aniTop = top;
	height = listObj.height();
	
	var scrollUp = function() {
		aniTop--;
		if(!nonStop){
			if(aniTop == -height) {
				listObj.css({'top': top});
				aniTop = top;
			};
		} else {
			if(aniTop == -listObj.children().eq(0).height()) {
				var firstItem = '<' + listElem +'>' + listObj.children().eq(0).html() + '</' + listElem +'>';
				listObj.children().eq(0).remove();
				listObj.append(firstItem);
				aniTop = 4;
			};
		};
		listObj.css({'top': aniTop + 'px'});
	};
	
	var hover = function(id) {
		listObj.hover(function() {
			clearInterval(id);
		}, function() {
			id = setInterval(scrollUp, speed);
		});
	};
	
	this.start = function() {
		id = setInterval(scrollUp, speed);
		hover(id);
	};
}