/***********************************************
* 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="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()">  
*********************************************************/

// 7 variables to control behavior
  var Book_Image_Width=100;
  var Book_Image_Height=133;
  var Book_Border=true;
  var Book_Border_Color="#680003";
  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(
    "images/page01.gif","",
    "images/page02.gif","",
    "images/page03.gif","",
    "images/page04.gif",""
    );

/***************** 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}