Question to add... your script for the fade between images works great. I am a complete novice at web design. I do help friends and family set up simple websites using dreamweaver. They always want the nice soft fade effects of Flash on thier pages. Your script is an easy fix without having to learn Flash. Thanks!
What if you do not want the images to fade to black (or whatever your background color may be)? what if you want it to fade over the previous photo?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title></title>
<style type="text/css">
/*<![CDATA[*/
#Tst {
position:relative;width:100px;height:100px;border:solid black 1px;
}
#Tst IMG {
position:absolute;left:0px;top:0px;
}
/*]]>*/
</style>
<script language="JavaScript" type="text/javascript">
/*<![CDATA[*/
// Basic Element Animator (04-October-2008) DRAFT
// by Vic Phillips http://www.vicsjavascripts.org.uk
// To progressively change the Left, Top, Width, Height or Opacity of an element over a specified period of time.
// **** Application Notes
// **** The HTML Code
//
// when moving an element the inline or class rule style position of the element should be assigned as
// 'position:relative;' or 'position:absolute;'
//
// The element would normally be assigned a unique ID name.
//
// **** Executing the Effect(Script)
//
// The effect is executed by an event call to function 'zxcBAnimator('left','tst1',20,260,2000);'
// where:
// parameter 0 = the mode(see Note 1). (string)
// parameter 1 = the unique ID name or element object. (string or element object)
// parameter 2 = the start position of the effect. (digits, for opacity minimum 0, maximum 100)
// parameter 3 = the finish position of the effect. (digits, for opacity minimum 0, maximum 100)
// parameter 4 = (optional) period of time between the start and finish of the effect in milliseconds. (digits or defaults to 2000 milliSeconds)
//
// Note 1: The default units(excepting opacity) are 'px'.
// Note 2: Examples modes: 'left', 'top', 'width', 'height', 'opacity.
// For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
// Note 3: To 'toggle' the effect include '#' in parameter 0.
// The first call will set the toggle parameters.
// Subsequent calls with '#' in parameter 0 and the same start and finish parameters will 'toggle' the effect.
// Note 4: The function may be re-executed with a different set of parameters (start/finish time or period)
// whenever required, say from an onclick/mouseover/out event.
// The period parameter will be retained unless re-specified.
//
// **** Advanced Applications
//
// It may be required to access the current value of the effect.
// The element effect is accessible from the element property
// element effect = elementobject[mode.replace(/[-#]/g,'')+'oop'];
// where mode is parameter 0 of the initial call.
// An array storing the current, start and finish values of the element effect may be accessed
// from the element effect.data as fields 0, 1 and 2 respectively
//
// **** General
//
// All variable, function etc. names are prefixed with 'zxc' to minimise conflicts with other JavaScripts.
// These characters may be changed to characters of choice using global find and replace.
//
// The Functional Code(about 2K) is best as an External JavaScript.
//
// Tested with IE7 and Mozilla FireFox on a PC.
//
// **** Functional Code - NO NEED to Change
function zxcBAnimator(zxcmde,zxcobj,zxcsrt,zxcfin,zxctime){
if (typeof(zxcobj)=='string'){ zxcobj=document.getElementById(zxcobj); }
if (!zxcobj||(!zxcsrt&&!zxcfin)||zxcsrt==zxcfin) return;
var zxcoop=zxcobj[zxcmde.replace(/[-#]/g,'')+'oop'];
if (zxcoop){
clearTimeout(zxcoop.to);
if (zxcoop.srtfin[0]==zxcsrt&&zxcoop.srtfin[1]==zxcfin&&zxcmde.match('#')) zxcoop.update([zxcoop.data[0],(zxcoop.srtfin[0]==zxcoop.data[2])?zxcfin:zxcsrt],zxctime);
else zxcoop.update([zxcsrt,zxcfin],zxctime);
}
else zxcobj[zxcmde.replace(/[-#]/g,'')+'oop']=new zxcBAnimatorOOP(zxcmde,zxcobj,zxcsrt,zxcfin,zxctime);
}
function zxcBAnimatorOOP(zxcmde,zxcobj,zxcsrt,zxcfin,zxctime){
this.srtfin=[zxcsrt,zxcfin];
this.to=null;
this.obj=zxcobj;
this.mde=zxcmde.replace(/[-#]/g,'');
this.update([zxcsrt,zxcfin],zxctime);
}
zxcBAnimatorOOP.prototype.update=function(zxcsrtfin,zxctime){
this.time=zxctime||this.time||2000;
this.data=[zxcsrtfin[0],zxcsrtfin[0],zxcsrtfin[1]];
this.srttime=new Date().getTime();
this.cng();
}
zxcBAnimatorOOP.prototype.cng=function(){
var zxcms=new Date().getTime()-this.srttime;
this.data[0]=(this.data[2]-this.data[1])/this.time*zxcms+this.data[1];
if (this.mde!='left'&&this.mde!='top'&&this.data[0]<0) this.data[0]=0;
if (this.mde!='opacity') this.obj.style[this.mde]=this.data[0]+'px';
else this.opacity(this.data[0]);
if (zxcms<this.time) this.to=setTimeout(function(zxcoop){return function(){zxcoop.cng();}}(this), 10);
else {
this.data[0]=this.data[2];
if (this.mde!='opacity') this.obj.style[this.mde]=this.data[0]+'px';
else this.opacity(this.data[0]);
}
}
zxcBAnimatorOOP.prototype.opacity=function(zxcopc){
if (zxcopc<0||zxcopc>100){ return; }
this.obj.style.filter='alpha(opacity='+zxcopc+')';
this.obj.style.opacity=this.obj.style.MozOpacity=this.obj.style.KhtmlOpacity=zxcopc/100-.001;
}
/*]]>*/
</script>
<script language="JavaScript" type="text/javascript">
/*<![CDATA[*/
function zxcSlideShow(zxcid,zxcnu,zxchold,zxcspd){
var zxcobj=document.getElementById(zxcid);
zxcobj.hold=zxchold||zxcobj.hold;
zxcobj.spd=zxcspd||zxcobj.zxcspd;
if (!zxcobj.oop) zxcobj.oop=new zxcSlideShowOOP(zxcobj,zxcnu,zxchold,zxcspd);
else {
var zxcoop=zxcobj.oop;
clearTimeout(zxcoop.to);
if (typeof(zxcnu)=='number') zxcnu=zxcoop.max-zxcnu;
if (zxcnu=='+'||zxcnu=='-'){
if (zxcnu=='+') zxcnu=zxcoop.nu-1;
else zxcnu=zxcoop.nu+1;
zxcnu=Math.max(Math.min(zxcoop.max,zxcnu),0);
}
if (typeof(zxcnu)=='number') zxcoop.fade(zxcnu);
else if (zxcnu.indexOf('auto')>-1) zxcoop.auto(zxcnu);
}
}
function zxcSlideShowOOP(zxcobj,zxcnu,zxchold,zxcspd){
this.obj=zxcobj;
this.imgary=[];
var zxcimgs=zxcobj.getElementsByTagName('IMG');
this.nu=zxcnu;
this.max=zxcimgs.length-1;
this.nu=this.max-zxcnu;
for (var zxc0=0;zxc0<this.max+1;zxc0++){
zxcimgs[zxc0].fade=[zxc0!=this.nu?0:100,zxc0!=this.nu?100:0];
zxcimgs[zxc0].style.zIndex=zxc0!=this.nu?0:1;
zxcimgs[zxc0].style.visibility=zxc0!=this.nu?'hidden':'visible';
this.imgary.push(zxcimgs[zxc0]);
}
this.lst=zxcimgs[this.nu];
this.to=null;
}
zxcSlideShowOOP.prototype.fade=function(zxcnu){
var zxcnxt=this.imgary[zxcnu];
if (zxcnxt&&zxcnxt!=this.lst){
this.nu=zxcnu;
zxcBAnimator('opacity#',this.lst,this.lst.fade[0],this.lst.fade[1],1000);
this.lst.style.zIndex=0;
zxcBAnimator('opacity#',zxcnxt,zxcnxt.fade[0],zxcnxt.fade[1],this.obj.spd);
zxcnxt.style.visibility='visible'
zxcnxt.style.zIndex=1;
this.lst=zxcnxt;
}
}
zxcSlideShowOOP.prototype.auto=function(zxcmde){
if (zxcmde.indexOf('-')>-1) zxcnu=this.nu+1;
else zxcnu=zxcnu=this.nu-1;
zxcnu=zxcnu<0?this.max:zxcnu>this.max?0:zxcnu;
this.fade(zxcnu);
this.to=setTimeout(function(zxcoop){return function(){zxcoop.auto(zxcmde);}}(this),this.obj.hold);
}
/*]]>*/
</script>
</head>
<body onload="zxcSlideShow('Tst',0,2000,1000);zxcSlideShow('Tst','auto+');">
<input type="button" name="" value="Fwd" onclick="zxcSlideShow('Tst','+');" />
<input type="button" name="" value="Back" onclick="zxcSlideShow('Tst','-');" />
<input type="button" name="" value="Auto +" onclick="zxcSlideShow('Tst','auto+');" />
<input type="button" name="" value="Stop" onclick="zxcSlideShow('Tst','stop');" />
<input type="button" name="" value="Auto -" onclick="zxcSlideShow('Tst','auto-');" />
<div id="Tst" >
<img src="http://www.vicsjavascripts.org.uk/StdImages/Four.gif" width="100" height="100" />
<img src="http://www.vicsjavascripts.org.uk/StdImages/Three.gif" width="100" height="100" />
<img src="http://www.vicsjavascripts.org.uk/StdImages/Two.gif" width="100" height="100" />
<img src="http://www.vicsjavascripts.org.uk/StdImages/One.gif" width="100" height="100" />
</div>
<img src="http://www.vicsjavascripts.org.uk/StdImages/One.gif" width="20" height="20" onclick="zxcSlideShow('Tst',0);"/>
<img src="http://www.vicsjavascripts.org.uk/StdImages/Two.gif" width="20" height="20" onclick="zxcSlideShow('Tst',1);"/>
<img src="http://www.vicsjavascripts.org.uk/StdImages/Three.gif" width="20" height="20" onclick="zxcSlideShow('Tst',2);"/>
<img src="http://www.vicsjavascripts.org.uk/StdImages/Four.gif" width="20" height="20" onclick="zxcSlideShow('Tst',3);"/>
</body>
</html>
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