function p$(string){
	document.write(string);
}
function $(id){
	return document.getElementById(id);
}
function change_menu(id,content_id,num,total_ztc_menu,menu_on,menu_off){
	for (var i=1;i<=total_ztc_menu;i++){
		$(id+i).className=menu_off;	
		$(content_id+i).style.display='none';				
	}
	$(id+num).className=menu_on;
	$(content_id+num).style.display='block';															
}
//可修改区域
var imgWidth=515;
var imgHeight=286;
var _timeOut_=10000;
var show_text = false; //是否显示焦点文字
var timeOut=_timeOut_;
var timeOut2=_timeOut_/2;//onmouseout img后需要切换的时间
var now=0;              //第一张图
var target="_self";   //打开方式
var button_on ='on'; //当前焦点对应按钮的样式名
var button_off ='';//非当前焦点对应按钮的样式名
//不可修改区域
var imgUrl = new Array();
var imgText = new Array();
var imgLink = new Array();
var imgAlt= new Array();
var menuList = new Array();//菜单menu
var ver=2; //兼容浏览器版本 默认2 为非ie
var firstTime=true;
var n =-1;		
//菜单menu
menuList[++n]='XX';
imgUrl[n]='img/home-Banner-left_A.jpg';
imgText[n]='<a href="Plans.asp">BB计划</a>';
imgLink[n]='Plans.asp';
imgAlt[n]='plan-bb';
//菜单menu
menuList[++n]='XX';
imgUrl[n]='img/home-Banner-left_B.jpg';
imgText[n]='<a href="Plan-Compare.asp" >节省70%</a>';
imgLink[n]='Plan-Compare.asp';
imgAlt[n]='save70%';
//菜单menu
menuList[++n]='XX';
imgUrl[n]='img/home-Banner-left_C.jpg';
imgText[n]='<a href="Channels.asp" >最优内容组合</a>';
imgLink[n]='Channels.asp';
imgAlt[n]='Channels';
//菜单menu
menuList[++n]='XX';
imgUrl[n]='img/home-Banner-left_D.jpg';
imgText[n]='<a href="HowItWorks.asp" >HowItWorks</a>';
imgLink[n]='HowItWorks.asp';
imgAlt[n]='HowItWorks';
//菜单menu
var count=0;
for (var i=0;i<imgUrl.length;i++) {
if( (imgUrl[i]!="") && (imgText[i]!="")&& (imgLink[i]!="")&& (imgAlt[i]!="")) {
	count++;
} else {
	break;
}
}
//重写css
var each_width=Math.ceil((imgWidth-(count-1))/count);
var last_width=imgWidth-each_width*(count-1)-(count)+1;
function change(){
if (ver==1){
	with($('f_img').filters[0]){
		Transition=1;
		apply();
		play(); 
	}
}
if (firstTime){ firstTime=false;timeOut=_timeOut_/1000;}
else{	 
	 $('f_img').src=imgUrl[now];
	 $('f_img').alt=imgAlt[now];
	 $('f_imgLink').href=imgLink[now];
	 if (show_text) $('f_text').innerHTML=imgText[now];		
	 for (var i=0;i<count;i++) {
		$('b'+i).className="button";
		//$('f_menu'+i).className="";
	 }
	 $('b'+now).className="on";	
	 //$('f_menu'+now).className="on";	 
	 now=(now>=imgUrl.length-1)?0:now+1;
	 timeOut=_timeOut_;		 
}
theTimer=setTimeout("change()", timeOut);
}
function b_change(num){
window.clearInterval(theTimer); 
now=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[now];	
$('f_imgDiv').appendChild(a);
var img = document.createElement("img");	
img.id="f_img";
img.width=imgWidth;
img.height=imgHeight;
img.src=imgUrl[now];
img.alt=imgAlt[now];
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='bg';
	$('f_buttonDiv').appendChild(div_bg);	
	var a = document.createElement("a");		
	a.id = 'b'+i;
	a.className = (i==now+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[now];
//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);