/*以下是导航菜单的脚本*/
// 作者:冰极峰
// 时间:2009-3-15
// 作用:此脚本用于设置三态导航菜单的高亮显示.

function getObj(objName){return(document.getElementById(objName));}

//全局变量,菜单数量和当前选中菜单的序号
var temp;/*菜单ID*/

window.onload =function() {
	var obj=getObj("menu");/*ul的id*/
	var obj_a=obj.getElementsByTagName("a");
	number=obj_a.length;
	for (var i=0,j=obj_a.length;i<j;i++){
		obj_a[i].index=i;
		obj_a[i].className="normal";
		obj_a[i].onclick=function(){click(this)};
		obj_a[i].onmouseover=function(){overme(this)};
		obj_a[i].onmouseout=function(){outme(this)};
		obj_a[i].onfocus=function(){this.blur()};/*去掉IE下的虚线框*/
	}
    if (getCookie("show_a") != null) {
		obj_a[getCookie("show_a")].className="cur";
		temp=getCookie("show_a")
	}
	else{
	    var obj=getObj("menu");
	    var obj_a=obj.getElementsByTagName("a");	    
		obj_a[0].className="cur";	    
	}	
}
//鼠标滑过效果
function overme(o){
    if (temp!=o.index) 
    o.className="over";/*翻滚色样式*/  
}
//鼠标移开后效果
function outme(o){
    if (temp!=o.index) 
    o.className="normal";/*翻滚色样式*/  
}
//鼠标点击效果
function click(o){
   
    var obj=getObj("menu");
	var obj_a=obj.getElementsByTagName("a");
	for (var i=0,j=obj_a.length;i<j;i++){
		obj_a[i].className="normal";
	}
	o.className="cur";
	o.blur();
	setCookie("show_a",o.index,1);/*设置1分钟后失效*/
	temp=o.index 
}
// --- 设置cookie
function setCookie(sName,sValue,expireMinute) {
	var cookieString = sName + "=" + escape(sValue);
	if (expireMinute>0) {//设置过期时间
		 var date = new Date();
		 //date.setTime(date.getTime + expireHours * 3600 * 1000);//时间单位=毫秒,以小时为参数
		 date.setTime(date.getTime + expireMinute * 60 * 1000);//时间单位=毫秒,以分钟为参数
		 
		 cookieString = cookieString + "; expire=" + date.toGMTString();
	}
	document.cookie = cookieString;//写cookie
}
//--- 获取cookie
function getCookie(sName) {
  var aCookie = document.cookie.split("; ");
  for (var j=0; j < aCookie.length; j++){
	var aCrumb = aCookie[j].split("=");
	if (escape(sName) == aCrumb[0])
	  return unescape(aCrumb[1]);
  }
  return null;
}
/*导航菜单的脚本行为结束*/
/*图文效果行为开始*/
function $(id) { return document.getElementById(id); }
function addLoadEvent(func){
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function(){
			oldonload();
			func();
		}
	}
}

function moveElement(elementID,final_x,final_y,interval) {
  if (!document.getElementById) return false;
  if (!document.getElementById(elementID)) return false;
  var elem = document.getElementById(elementID);
  if (elem.movement) {
    clearTimeout(elem.movement);
  }
  if (!elem.style.left) {
    elem.style.left = "0px";
  }
  if (!elem.style.top) {
    elem.style.top = "0px";
  }
  var xpos = parseInt(elem.style.left);
  var ypos = parseInt(elem.style.top);
  if (xpos == final_x && ypos == final_y) {
		return true;
  }
  if (xpos < final_x) {
    var dist = Math.ceil((final_x - xpos)/10);
    xpos = xpos + dist;
  }
  if (xpos > final_x) {
    var dist = Math.ceil((xpos - final_x)/10);
    xpos = xpos - dist;
  }
  if (ypos < final_y) {
    var dist = Math.ceil((final_y - ypos)/10);
    ypos = ypos + dist;
  }
  if (ypos > final_y) {
    var dist = Math.ceil((ypos - final_y)/10);
    ypos = ypos - dist;
  }
  elem.style.left = xpos + "px";
  elem.style.top = ypos + "px";
  var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
  elem.movement = setTimeout(repeat,interval);
}

function classNormal(iFocusBtnID,iFocusTxID){
	var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');
	var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');
	for(var i=0; i<iFocusBtns.length; i++) {
		iFocusBtns[i].className='normal';
		iFocusTxs[i].className='normal';
	}
}

function classCurrent(iFocusBtnID,iFocusTxID,n){
	var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');
	var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');
	iFocusBtns[n].className='current';
	iFocusTxs[n].className='current';
}

function iFocusChange() {
	if(!$('ifocus')) return false;
	$('ifocus').onmouseover = function(){atuokey = true};
	$('ifocus').onmouseout = function(){atuokey = false};
	var iFocusBtns = $('ifocus_btn').getElementsByTagName('li');
	var listLength = iFocusBtns.length;
	iFocusBtns[0].onmouseover = function() {
		moveElement('ifocus_piclist',0,0,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',0);
	}
	if (listLength>=2) {
		iFocusBtns[1].onmouseover = function() {
			moveElement('ifocus_piclist',0,-225,5);
			classNormal('ifocus_btn','ifocus_tx');
			classCurrent('ifocus_btn','ifocus_tx',1);
		}
	}
	if (listLength>=3) {
		iFocusBtns[2].onmouseover = function() {
			moveElement('ifocus_piclist',0,-450,5);
			classNormal('ifocus_btn','ifocus_tx');
			classCurrent('ifocus_btn','ifocus_tx',2);
		}
	}
	if (listLength>=4) {
		iFocusBtns[3].onmouseover = function() {
			moveElement('ifocus_piclist',0,-675,5);
			classNormal('ifocus_btn','ifocus_tx');
			classCurrent('ifocus_btn','ifocus_tx',3);
		}
	}
}

setInterval('autoiFocus()',5000);
var atuokey = false;
function autoiFocus() {
	if(!$('ifocus')) return false;
	if(atuokey) return false;
	var focusBtnList = $('ifocus_btn').getElementsByTagName('li');
	var listLength = focusBtnList.length;
	for(var i=0; i<listLength; i++) {
		if (focusBtnList[i].className == 'current') var currentNum = i;
	}
	if (currentNum==0&&listLength!=1 ){
		moveElement('ifocus_piclist',0,-225,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',1);
	}
	if (currentNum==1&&listLength!=2 ){
		moveElement('ifocus_piclist',0,-450,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',2);
	}
	if (currentNum==2&&listLength!=3 ){
		moveElement('ifocus_piclist',0,-675,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',3);
	}
	if (currentNum==3 ){
		moveElement('ifocus_piclist',0,0,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',0);
	}
	if (currentNum==1&&listLength==2 ){
		moveElement('ifocus_piclist',0,0,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',0);
	}
	if (currentNum==2&&listLength==3 ){
		moveElement('ifocus_piclist',0,0,5);
		classNormal('ifocus_btn','ifocus_tx');
		classCurrent('ifocus_btn','ifocus_tx',0);
	}
}
addLoadEvent(iFocusChange);
/*图文效果行为结束*/