<!-- http://bbs.knowsky.com-->
<!--完成此效果需要把下面代码放到<body>区域中-->
<div align="center">
<SCRIPT language=JavaScript>
<!--
//----------------------- Start Customizable Variables -----------------------//
//=== Positioning ===//
var left = 100;// Starting left position
var top = 20;// Starting left position
//=== Curve and Distance ===//
var topInc = 5;// Incriment of top position
var leftInc = 5;// Incriment of left position
/* Make both the horizontal curve and the vertical curve the same to..
.. get an increasing gap with no curve. */
var hor_curve = 20;// Horizontal curve - 0 for no curve
var ver_curve = -20;// Vertical curve - 0 for no curve
//=== Timing and Other ===//
var noTimes = 50;// Number of times the picture is shown
var waitTime = 1;// Time delay
var layer = 2;// Layer level
var picture = '/images/logo.gif';// Picture to display (Smaller images work better)
var start_retracted= true;// Start the image retracted (true / false)
var retract= true;// Retract from behind after expanding (true / false)
//=== Fade options (Only IEusers see fade) ===//
var fade = true;// Gradual Fade (true / false) - Only works if retract =true
var fd_destop = 0;// Destination transparency level (ie 80, for mostly solid)
var fd_rate = 10;// Time in milliseconds between trasparency changes (best under 100)
var fd_delta = 5;// Amount of change each time (ie 5, for 5% change in transparency)
var event_init = 'onClick';// Event at which the script is initiated
var left_formula = '(left + leftInc) + ((count/100) * hor_curve)';// Left position formula
var top_formula = '(top + topInc) + ((count/100) * ver_curve)';// Top position formula
//----------------------- End Customizable Variables -----------------------//
//--------------------- DO NOT EDIT BEYOND THIS POINT! ---------------------//
var count = 0;
var count2 = 0;
var timeOutVal = waitTime * 10;
var txt;
var image;
var imageName;
var lay = new Array;
function addLayer(){
left = eval(left_formula);
top = eval(top_formula);
txt = "<div id='Layer" + count + "' style='position:absolute; visibility:hidden; left:" + left + "; top:" + top + "; z-index:" + layer + "'>";
txt += "<a href='#' " + event_init + "='replay()'><img src='" + picture + "' border=0 style='filter:alpha(opacity=100)' name = 'Image" + count + "'></a>";
txt += "</div>";
document.write(txt);
lay[count]=new lib_obj("Layer"+count);
}
function logoCurveInit(){
while (count < noTimes) {
addLayer();
count++;
}
count = 0;
lay[0].showIt();
if (!start_retracted)
animate();
}
function animate(){
if (start_retracted) {
if (!retract){
if (count > 0){
setTimeout('animate()',timeOutVal);
lay[count].hideIt();
count--;
}
}
else{
if (count >= 0){
setTimeout('animate()',timeOutVal);
lay[count].showIt();
if (count != 0)
fadeImage();
count--;
}
}
if (retract){
if(count==0)
retractIt();
}
}
else{
if (count < noTimes){
setTimeout('animate()',timeOutVal);
lay[count].showIt();
if (count != noTimes-1 && retract)
fadeImage();
count++;
}
if (retract){
if (count == noTimes)
retractIt();
}
}
}
function replay(){
if ((count == noTimes || (count == 0 || count == -1)) &&(count2 == noTimes-1 || count2 == 0)){
start_retracted = !start_retracted; // Make the value opposite of what it is
make_all_visible();
if (start_retracted){
count = noTimes-1;
}
else {
count = 0;
}
animate();
}
}
function retractIt(){
if (start_retracted) { // If the logo is not retracted (showing all the layers)
if (count2 > 0){
setTimeout('retractIt()',timeOutVal);
lay[count2].hideIt();
count2--;
}
}
else{ // If the logo is retracted (Only showing the first layer)
if (count2 < noTimes-1){
setTimeout('retractIt()',timeOutVal);
lay[count2].hideIt();
count2++;
}
}
}
function fadeImage(){
if (fade){
if (count >= 0 && count <= noTimes){
image = document.images['Image' + count];
nereidFade(image,fd_destop,fd_rate,fd_delta);
}
}
}
function make_all_visible(){
for (var i = 0; i< noTimes ; i++){
if (document.images['Image' + i].style.MozOpacity){
document.images['Image' + i].style.MozOpacity=100;
}
else if (document.images['Image' + i].filters) {
document.images['Image' + i].filters.alpha.opacity = 100;
}
}
}
////***************(DHTMLCentral.com)****************////
function check_browser(){
this.ver=navigator.appVersion
this.agent=navigator.userAgent
this.dom=document.getElementById?1:0
this.opera5=this.agent.indexOf("Opera 5")>-1
this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
this.ie=this.ie4||this.ie5||this.ie6
this.mac=this.agent.indexOf("Mac")>-1
this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
this.ns4=(document.layers && !this.dom)?1:0;
this.bw=(this.ie6||this.ie5||this.ie4||this.ns4||this.ns6||this.opera5)
return this
}
bw=new check_browser()
function show_message(txt){alert(txt); return false}
function lib_obj(obj,nest){
if(!bw.bw) return show_message('Old browser')
nest=(!nest) ? "":'document.'+nest+'.'
this.evnt=bw.dom? document.getElementById(obj):
bw.ie4?document.all[obj]:bw.ns4?eval(nest+"document.layers." +obj):0;
if(!this.evnt) return show_message('The layer does not exist ('+obj+')'
+'- If your using Netscape please check the nesting of your tags!')
this.css=bw.dom||bw.ie4?this.evnt.style:this.evnt;
this.ref=bw.dom||bw.ie4?document:this.css.document;
this.x=parseInt(this.css.left)||this.css.pixelLeft||this.evnt.offsetLeft||0;
this.y=parseInt(this.css.top)||this.css.pixelTop||this.evnt.offsetTop||0
this.w=this.evnt.offsetWidth||this.css.clip.width|| this.ref.width||this.css.pixelWidth||0;
this.h=this.evnt.offsetHeight||this.css.clip.height|| this.ref.height||this.css.pixelHeight||0
this.c=0
if((bw.dom || bw.ie4) && this.css.clip) {
this.c=this.css.clip; this.c=this.c.slice(5,this.c.length-1);
this.c=this.c.split(' ');
for(var i=0;i<4;i++){this.c[i]=parseInt(this.c[i])}
}
this.ct=this.css.clip.top||this.c[0]||0;
this.cr=this.css.clip.right||this.c[1]||this.w||0
this.cb=this.css.clip.bottom||this.c[2]||this.h||0;
this.cl=this.css.clip.left||this.c[3]||0
this.obj = obj + "Object"; eval(this.obj + "=this")
return this
}
lib_obj.prototype.showIt = function(){this.css.visibility="visible"}
lib_obj.prototype.hideIt = function(){this.css.visibility="hidden"}
lib_obj.prototype.writeIt = function(text,startHTML,endHTML){
if(bw.ns4){
if(!startHTML){startHTML=""; endHTML=""} this.ref.open("text/html");
this.ref.write(startHTML+text+endHTML);
this.ref.close()
}else this.evnt.innerHTML=text
}
////***************(DHTMLCentral.com)****************////
/* Code taken from DynamicDrive.com (Start)-->
Gradual-Highlight Image Script II-
By J. Mark Birenbaum (birenbau@ugrad.cs.ualberta.ca)
For full source to script, visit http://dynamicdrive.com */
nereidFadeObjects = new Object();nereidFadeTimers = new Object();
function nereidFade(object, destOp, rate, delta){
if (!document.all)return
if (object != "[object]"){ setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0); return;}
clearTimeout(nereidFadeTimers[object.sourceIndex]); diff = destOp-object.filters.alpha.opacity;
direction = 1; if (object.filters.alpha.opacity > destOp){direction = -1;}
delta=Math.min(direction*diff,delta); object.filters.alpha.opacity+=direction*delta;
if (object.filters.alpha.opacity != destOp){ nereidFadeObjects[object.sourceIndex]=object;
nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
}
}
// <-- Code taken from DynamicDrive.com (End)
window.onload=new logoCurveInit();
//--> End Hide
</SCRIPT><br><br><br><br><br><br><br><br>
用鼠标单击一下图片你可以看到非常好的效果!
</div>
