js 翻书效果

ie缓存设置为默认的“自动”。如果设置为“每次检查”则效果失败，改用Image()对象预装载图像也不行，因为此时不允许浏览器直接从缓存中调用图片。
<script>
w=280;
speed1=1;
speed2=3;
mybool=true;
i=0;
obj=null;
function mypage()
{
if(mybool)
{
if(obj.offsetWidth-speed2>=0)
obj.style.width=obj.offsetWidth-speed2;
else
obj.style.width=0;
if(obj.offsetWidth>0)
setTimeout(mypage,speed1);
else
{
document.all.mybtn.disabled=false;
document.all.mybtn2.disabled=false;
return;
}
}
else
{
if(obj.offsetWidth+speed2<=w)
obj.style.width=obj.offsetWidth+speed2;
else
obj.style.width=w;
if(obj.offsetWidth<w)
setTimeout(mypage,speed1);
else
{
document.all.mybtn.disabled=false;
document.all.mybtn2.disabled=false;
return;
}
}
}
function myobj(mybool2)
{
document.all.mybtn.disabled=true;
document.all.mybtn2.disabled=true;
mybool=mybool2;
if(mybool2)
{
if(i==document.all.mydiv.getElementsByTagName("div").length-1)
{
document.all.mydiv.getElementsByTagName("div")[0].style.width=w;
document.all.mydiv.getElementsByTagName("div")[0].style.zIndex=0;
}
if(i<document.all.mydiv.getElementsByTagName("div").length)
{
obj=document.all.mydiv.getElementsByTagName("div")[i++];
}
else
{
i=0;
obj=document.all.mydiv.getElementsByTagName("div")[i++];
obj.style.zIndex=100;
for(j=1;j<document.all.mydiv.getElementsByTagName("div").length;j++)
document.all.mydiv.getElementsByTagName("div")[j].style.width=w;
}
}
else
{
if(i==1)
{
document.all.mydiv.getElementsByTagName("div")[0].style.width=0;
document.all.mydiv.getElementsByTagName("div")[0].style.zIndex=100;
}
if(i>0)
{
obj=document.all.mydiv.getElementsByTagName("div")[--i];
}
else
{
i=document.all.mydiv.getElementsByTagName("div").length-1;
obj=document.all.mydiv.getElementsByTagName("div")[i];
document.all.mydiv.getElementsByTagName("div")[0].style.zIndex=0;
for(j=1;j<document.all.mydiv.getElementsByTagName("div").length;j++)
document.all.mydiv.getElementsByTagName("div")[j].style.width=0;
}
}
mypage();
}
</script>
<input name=mybtn2 type=button value=last onclick='myobj(false)'><input name=mybtn type=button value=next onclick='myobj(true)'><br>
<div id=mydiv>
<div style="position:absolute;z-index:5;background-image:url(1.gif);width:280;height:187"></div>
<div style="position:absolute;z-index:4;background-image:url(2.gif);width:280;height:187"></div>
<div style="position:absolute;z-index:3;background-image:url(3.gif);width:280;height:187"></div>
<div style="position:absolute;z-index:2;background-image:url(4.gif);width:280;height:187"></div>
<div style="position:absolute;z-index:1;background-image:url(5.gif);width:280;height:187"></div>
</div>
head:
<script type="text/javascript">/********************************************************
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=140;
var Book_Image_Height=225;
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(
"jsimg/photo1.jpg","http://www.smallrain.net.net",
"jsimg/photo2.jpg","http://www.jingran.org",
"jsimg/photo3.jpg","", //this slide isn't linked
"jsimg/photo4.jpg","http://www.b2bsky.com" // 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}
</script>
body:<div id="Book" style="position:relative">
<img src="jsimg/placeholder.gif" width="144" height="227">
</div>

解决方案 »