// 7 variables to control behavior
var Book_Image_Width=248;
var Book_Image_Height=160;
var Book_Border=true;
var Book_Border_Color="gray";
var Book_Speed=15;
var Book_NextPage_Delay=1500; //1 second=1000
var Book_Vertical_Turn=0;

// array to specify images and optional links. At least 4
// If Link is not needed keep it ""

Book_Image_Sources=new Array(
   "zhuye/img01.jpg","",
   "zhuye/img02.jpg","",
   "zhuye/img03.jpg","", //this slide isn't linked
   "zhuye/img04.jpg","" // NOTE No comma after last line
   );

/***************** DO NOT EDIT BELOW **********************************/
var B_LI,B_MI,B_RI,B_TI,B_Angle=0,B_CrImg=6,B_MaxW,B_Direction=1;
var B_MSz,B_Stppd=false;B_Pre_Img=new Array(Book_Image_Sources.length);

function ImageBook(){
   if(document.getElementById){
    for(i=0;i<Book_Image_Sources.length;i+=2){
     B_Pre_Img[i]=new Image();B_Pre_Img[i].src=Book_Image_Sources[i]}
    Book_Div=document.getElementById("Book");
    B_LI=document.createElement("img");Book_Div.appendChild(B_LI); 
    B_RI=document.createElement("img");Book_Div.appendChild(B_RI);
    B_MI=document.createElement("img");Book_Div.appendChild(B_MI); 
    B_LI.style.position=B_MI.style.position=B_RI.style.position="absolute";
    B_LI.style.zIndex=B_RI.style.zIndex=0;B_MI.style.zIndex=1;
    B_LI.style.top=(Book_Vertical_Turn?Book_Image_Height+1:0)+"px";
    B_LI.style.left=0+"px";
    B_MI.style.top=0+"px";
    B_MI.style.left=(Book_Vertical_Turn?0:Book_Image_Width+1)+"px";
    B_RI.style.top=0+"px";
    B_RI.style.left=(Book_Vertical_Turn?0:Book_Image_Width+1)+"px";
    B_LI.style.height=Book_Image_Height+"px";
    B_MI.style.height=Book_Image_Height+"px";
    B_RI.style.height=Book_Image_Height+"px";
    B_LI.style.width=Book_Image_Width+"px";
    B_MI.style.width=Book_Image_Width+"px";
    B_RI.style.width=Book_Image_Width+"px";
    if(Book_Border){
     B_LI.style.borderStyle=B_MI.style.borderStyle=B_RI.style.borderStyle="solid";
     B_LI.style.borderWidth=1+"px";
     B_MI.style.borderWidth=1+"px";
     B_RI.style.borderWidth=1+"px";
     B_LI.style.borderColor=B_MI.style.borderColor=B_RI.style.borderColor=Book_Border_Color}
    B_LI.src=B_Pre_Img[0].src;
    B_LI.lnk=Book_Image_Sources[1];
    B_MI.src=B_Pre_Img[2].src;
    B_MI.lnk=Book_Image_Sources[3];
    B_RI.src=B_Pre_Img[4].src;
    B_RI.lnk=Book_Image_Sources[5];
    B_LI.onclick=B_MI.onclick=B_RI.onclick=B_LdLnk;
    B_LI.onmouseover=B_MI.onmouseover=B_RI.onmouseover=B_Stp;
    B_LI.onmouseout=B_MI.onmouseout=B_RI.onmouseout=B_Rstrt;
    BookImages()}}

function BookImages(){
   if(!B_Stppd){
    if(Book_Vertical_Turn){
     B_MSz=Math.abs(Math.round(Math.cos(B_Angle)*Book_Image_Height));
     MidOffset=!B_Direction?Book_Image_Height+1:Book_Image_Height-B_MSz;
     B_MI.style.top=MidOffset+"px";
     B_MI.style.height=B_MSz+"px"}
    else{ B_MSz=Math.abs(Math.round(Math.cos(B_Angle)*Book_Image_Width));
     MidOffset=B_Direction?Book_Image_Width+1:Book_Image_Width-B_MSz;
     B_MI.style.left=MidOffset+"px";
     B_MI.style.width=B_MSz+"px"}
    B_Angle+=Book_Speed/720*Math.PI;
    if(B_Angle>=Math.PI/2&&B_Direction){
     B_Direction=0;
     if(B_CrImg==Book_Image_Sources.length)B_CrImg=0;
     B_MI.src=B_Pre_Img[B_CrImg].src;
     B_MI.lnk=Book_Image_Sources[B_CrImg+1];
     B_CrImg+=2}
    if(B_Angle>=Math.PI){
     B_Direction=1;
     B_TI=B_LI;
     B_LI=B_MI;
     B_MI=B_TI;
     if(Book_Vertical_Turn)B_MI.style.top=0+"px";
     else B_MI.style.left=Book_Image_Width+1+"px";   
     B_MI.src=B_RI.src;
     B_MI.lnk=B_RI.lnk;

     setTimeout("Book_Next_Delay()",Book_NextPage_Delay)}
    else setTimeout("BookImages()",50)}
   else setTimeout("BookImages()",50)}

function Book_Next_Delay(){
    if(B_CrImg==Book_Image_Sources.length)B_CrImg=0;
    B_RI.src=B_Pre_Img[B_CrImg].src;
    B_RI.lnk=Book_Image_Sources[B_CrImg+1];
    B_MI.style.zIndex=2;
    B_LI.style.zIndex=1;
    B_Angle=0;
    B_CrImg+=2;
   setTimeout("BookImages()",50)}

function B_LdLnk(){if(this.lnk)window.location.href=this.lnk}
function B_Stp(){B_Stppd=true;this.style.cursor=this.lnk?"pointer":"default"}
function B_Rstrt(){B_Stppd=false}