function $(id) { return document.getElementById(id);
	}
function addEvent(node, eventName, func) {
	if('attachEvent' in node) node.attachEvent('on' + eventName, func);
	else { if (!(/Chrome/i).test(navigator.userAgent) && eventName == 'mousewheel') eventName = 'DOMMouseScroll';
		node.addEventListener(eventName, func, false);}
	}
function delEvent(node, eventName, func){
	if('detachEvent' in node) node.detachEvent('on' + eventName, func);
	else { if (!(/Chrome/i).test(navigator.userAgent) && eventName == 'mousewheel') eventName = 'DOMMouseScroll';
		node.removeEventListener(eventName, func, false);}
	}