if (window.Event)
	document.captureEvents(Event.MOUSEUP);

	function nocontextmenu()
	{
		event.cancelBubble = true
		event.returnValue = false;

		return false;
	}

	function norightclick(e)
	{
		if (window.Event)
		{
			if (e.which == 2 || e.which == 3)
			return false;
		}
		else
		if (event.button == 2 || event.button == 3)
		{
			event.cancelBubble = true
			event.returnValue = false;
			return false;
		}
	}
	//alert('ok');
	
	document.oncontextmenu = nocontextmenu; // for IE5+
	document.onmousedown = norightclick; // for all others

	/*
	document.ondragstart = dragstart; // mouse 不能拖拉复制//
	document.onselectstart = selectstart; // 同上// 顶菜单也不能使用++ 爽 2006/06/22 11:10

	function dragstart(e)
	{
		return false;
	}
	function selectstart(e)
	{
		return false;
	}
	*/