//读取页面元素 by lizux
function getObj(objectId) {
	if (document.getElementById && document.getElementById(objectId)) {
		// W3C DOM
		return document.getElementById(objectId);
	} else if (document.all && document.all(objectId)) {
		// MSIE 4 DOM
		return document.all(objectId);
	} else if (document.layers && document.layers[objectId]) {
		// NN 4 DOM.. note: this won't find nested layers
		return document.layers[objectId];
	} else {
		return false;
	}
}
//交替显示页面元素 by lizux
function swshow(order, obj, total, more) {
	var order;
	var obj;
	var total;
	var more;
	switch (obj) {
	case 1 :
		obj1 = "t1s";
		obj2 = "t1d";
		if (more == "more") {
			obj3 = "t1m";
		}
		break;
	case 2 :
		obj1 = "t2s";
		obj2 = "t2d";
		if (more == "more") {
			obj3 = "t2m";
		}
		break;
	case 3 :
		obj1 = "t3s";
		obj2 = "t3d";
		if (more == "more") {
			obj3 = "t3m";
		}
		break;
	case 4 :
		obj1 = "t4s";
		obj2 = "t4d";
		break;
	}
	for (i=1; i<=total; i++) {
		if (order == i) {
			getObj(obj1+i).className = "current";
			if (i == 6) {
				getObj(obj1+i).className = "current last";
			}
			getObj(obj2+i).style.display = "";
			if (more == "more") {
				getObj(obj3+i).style.display = "";
			}
		} else {
			getObj(obj1+i).className = "";
			if (i == 6) {
				getObj(obj1+i).className = "last";
			}
			getObj(obj2+i).style.display = "none";
			if (more == "more") {
				getObj(obj3+i).style.display = "none";
			}
		}
	}
}