function $(id){
   return document.getElementById(id);
}

//可修改区域
var imgWidth=360;
var imgHeight=320;
var _timeOut_=5000;
var show_text = true; //是否显示焦点文字
var timeOut=_timeOut_;
var timeOut2=_timeOut_/2;//onmouseout img后需要切换的时间
var pnow=0;              //第一张图
var target="_blank";   //打开方式
var button_on ='on'; //当前焦点对应按钮的样式名
var button_off ='';//非当前焦点对应按钮的样式名
//不可修改区域
var imgUrl = new Array();
var imgText = new Array();
var imgLink = new Array();
var imgAlt= new Array();
var menuList = new Array();//菜单menu
var ver=2; //兼容浏览器版本 默认2 为非ie
var firstTime=true;
var n =-1;		
//菜单menu

menuList[++n]='齐白石嫡传人王东常到我区图书馆参观交流';
imgUrl[n]='../myfiles/admin/54_20100309161918TY.jpg';
imgText[n]='<a href="zwgk_info_view.jsp?id=12251" target="_blank">齐白石嫡传人王东常到我区图书馆参观交流</a>';
imgLink[n]='zwgk_info_view.jsp?id=12251';
imgAlt[n]='齐白石嫡传人王东常到我区图书馆参观交流';

menuList[++n]='我台火炬警讯节目荣获第六届全省优秀警视专题节目评选第二名';
imgUrl[n]='../myfiles/admin/54_20100309161813O4.jpg';
imgText[n]='<a href="zwgk_info_view.jsp?id=12250" target="_blank">我台火炬警讯节目荣获第六届全省优秀警视专题节目评选第二名</a>';
imgLink[n]='zwgk_info_view.jsp?id=12250';
imgAlt[n]='我台火炬警讯节目荣获第六届全省优秀警视专题节目评选第二名';

menuList[++n]='火炬职院举行2010年春季开学典礼';
imgUrl[n]='../myfiles/admin/54_201003091617133r.jpg';
imgText[n]='<a href="zwgk_info_view.jsp?id=12249" target="_blank">火炬职院举行2010年春季开学典礼</a>';
imgLink[n]='zwgk_info_view.jsp?id=12249';
imgAlt[n]='火炬职院举行2010年春季开学典礼';

menuList[++n]='庆祝三八国际妇女节 我区各界妇女精英展现巾帼风采';
imgUrl[n]='../myfiles/admin/54_20100309161616bh.jpg';
imgText[n]='<a href="zwgk_info_view.jsp?id=12248" target="_blank">庆祝三八国际妇女节 我区各界妇女精英展现巾帼风采</a>';
imgLink[n]='zwgk_info_view.jsp?id=12248';
imgAlt[n]='庆祝三八国际妇女节 我区各界妇女精英展现巾帼风采';

menuList[++n]='六和居民载歌载舞庆“三八”迎亚运';
imgUrl[n]='../myfiles/admin/54_20100308170330ZL.jpg';
imgText[n]='<a href="zwgk_info_view.jsp?id=12206" target="_blank">六和居民载歌载舞庆“三八”迎亚运</a>';
imgLink[n]='zwgk_info_view.jsp?id=12206';
imgAlt[n]='六和居民载歌载舞庆“三八”迎亚运';


var count=0;
for (var i=0;i<imgUrl.length;i++) {
if( (imgUrl[i]!="") && (imgText[i]!="")&& (imgLink[i]!="")&& (imgAlt[i]!="")) {
count++;
} else {
break;
}
}
//重写css
var each_width=Math.ceil((imgWidth-(count-1))/count);
var last_width=imgWidth-each_width*(count-1)-(count)+1;
function change(){
if (ver==1){
with($('f_img').filters[0]){
Transition=1;
apply();
play(); 
}
}
if (firstTime){ firstTime=false;timeOut=_timeOut_/1000;}
else{	 
$('f_img').src=imgUrl[pnow];
$('f_img').alt=imgAlt[pnow];
$('f_imgLink').href=imgLink[pnow];
if (show_text) $('f_text').innerHTML=imgText[pnow];		
for (var i=0;i<count;i++) {
$('b'+i).className="button";
}
$('b'+pnow).className="on";	

pnow=(pnow>=imgUrl.length-1)?0:pnow+1;

timeOut=_timeOut_;		 
}
theTimer=setTimeout("change()", timeOut);
}
function b_change(num){
window.clearInterval(theTimer); 
pnow=num;
firstTime=false;
change();
}
//draw 渐变line （即css:f_line)
function draw_line(){
var div = document.createElement("div");	
div.id = 'f_line';
$('f_infoDiv').insertBefore(div,$('f_infoDiv').childNodes.item(0));			
}
//表现层 start	
//图片
var a = document.createElement("a");		
a.id="f_imgLink";
a.target=target;
a.href=imgLink[pnow];	
$('f_imgDiv').appendChild(a);
var img = document.createElement("img");	
img.id="f_img";
img.width=imgWidth;
img.height=imgHeight;
img.src=imgUrl[pnow];
img.alt=imgAlt[pnow];
a.appendChild(img);
//数字按钮
for (var i=count-1;i>=0;i--){
var div_bg = document.createElement("div");		
div_bg.id = 'div_bg'+i;
div_bg.className='focus_bg';
$('f_buttonDiv').appendChild(div_bg);	
var a = document.createElement("a");		
a.id = 'b'+i;
a.className = (i==pnow+1)?"button_on":"button_off";		
a.title=imgAlt[i];
a.innerHTML=i+1;
a.href='javascript:b_change('+i+')';		
$('div_bg'+i).appendChild(a);	
var div= document.createElement("div");
$('f_buttonDiv').appendChild(div);			
}	    
if (show_text) $('f_text').innerHTML = imgText[pnow];
//表现层 end
$('f_img').onmouseover=function(){window.clearInterval(theTimer);}
$('f_img').onmouseout=function(){theTimer=setTimeout("change()", timeOut2);}
try{  //滤镜版本
new ActiveXObject("DXImageTransform.Microsoft.Fade");
$('f_img').filters[0].play();	  
ver=1;
draw_line(); 
}
catch (e){ver=2;}
var theTimer = setTimeout("change()", _timeOut_/1000);