/***********************************************
* Book Flip slideshow script- © Ger Versluis 2003
* Permission granted to DynamicDrive.com to feature script
* This notice must stay intact for use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

/********************************************************
Create a div with transparent place holder in your html
<div id="Book" style="position:relative">
<img src="img/placeholder.gif" width="144" height="227">
/div>
width = 2*book image width +4 height = book image height+2

Insert onload in body tag
  <body onload="ImageBook()">
*********************************************************/

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}

