// JavaScript Document
//产品列表动态延时弹性菜单
window.onload = function() {
	rolinTab("rolin"); //加载自动合并函数
}
function rolinTab(obj) {
	var list = $(obj).getElementsByTagName("LI");
	var state = {show:false,hidden:false,showObj:false};
	for (var i=0; i<list.length; i++) {
		var tmp = new rolinItem(list[i],state);
		//if (i == 0) tmp.pShow();
	}
}
function rolinItem(obj,state) {
	var speed = 0.0666; 
	var range = 1;
	var interval;
	var tarH;
	var tar = this;
	var head = getFirstChild(obj);
	var content = getNextChild(head);
	var isOpen = false;
	this.pHidden = function() {
	if (isOpen) hidden();
	}
	this.pShow = show;
	var baseH = content.offsetHeight;
	content.style.display = "none";
	var isOpen = false;
	head.onmouseover = function() {
	//this.style.background = "#EFEFEF";
	}
	head.onmouseout = mouseout;
	head.onclick = function() {
	//this.style.background = "#EFEFEF";
	if (!state.show && !state.hidden) {
	if (!isOpen) {
	head.onmouseout = null;
	show();
	} else {
	hidden();
	}
	}
}
function mouseout(){
	//this.style.background = "#FFF"
}
function show(){
	head.style.borderBottom = "1px solid #DADADA";
	state.show = true;
	if (state.openObj && state.openObj != tar ) {
	state.openObj.pHidden();
}
content.style.height = "0px";
content.style.display = "block";
content.style.overflow = "hidden";
state.openObj = tar;
tarH = baseH;
interval = setInterval(move,10);
}
function showS(){
	isOpen = true;
	state.show = false;
}
function hidden(){
	state.hidden = true;
	tarH = 0;
	interval = setInterval(move,10);
}
function hiddenS(){
head.style.borderBottom = "none";
head.onmouseout = mouseout;
head.onmouseout();
content.style.display = "none";
isOpen = false;
state.hidden = false;
}
function move(){
var dist = (tarH - content.style.height.pxToNum())*speed;
if (Math.abs(dist) < 1) dist = dist > 0 ? 1: -1;
content.style.height = (content.style.height.pxToNum() + dist) + "px";
if (Math.abs(content.style.height.pxToNum() - tarH) <= range ) {
clearInterval(interval);
content.style.height = tarH + "px";
if (tarH != 0) {
showS()
} else {
hiddenS();
}
}
}
}
var $ = function($) {return document.getElementById($)};
String.prototype.pxToNum = function() {return Number(this.replace("px",""))}
function getFirstChild(obj) {
var result = obj.firstChild;
while (!result.tagName) {
result = result.nextSibling;
}
return result;
}
function getNextChild(obj) {
var result = obj.nextSibling;
while (!result.tagName) {
result = result.nextSibling;
}
return result;
}
//end