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View Full Version : Question: Random event, Opaticy in and out(like glowing)



mrfanatastikk
08-01-2010, 02:38 AM
Hey!
I have a problem and i have looked all around for an anwser. I need some type of code or script to make my 3 images glow with opacity going in and out.

Basically, I have 3 images on a page and I want one of the images to randomly fade in for a couple secs then fade out then repeat somewhere between 4 to 20 secs. But, all the images have the same concept going on with their own random fading in and out (without mouse over).

Does anyone know of a script or anything that could do this or if anyone could help me make something like this? Not very good with JS.

Thank you for taking the time. Have a good day or night:D

vwphillips
08-01-2010, 01:19 PM
<!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>
<script type="text/javascript">
// Animate (11-January-2010)
// 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.
// With the ability to scale the effect time on specified minimum/maximum values
// and with three types of progression 'sin' and 'cos' and liner.

// **** 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.
//

// **** Initialising the Script.
//
// The script is initialised by assigning an instance of the script to a variable.
// e.g A = new zxcAnimate('left','id1')
// where:
// A = a global variable (variable)
// parameter 0 = the mode(see Note 1). (string)
// parameter 1 = the unique ID name or element object. (string or element object)
// parameter 1 = the initial value. (digits, default = 0)

// **** Executing the Effect
//
// The effect is executed by an event call to function 'A.animate(10,800 ,5000,[10,800]);'
// where:
// A = the global referencing the script instance. (variable)
// parameter 0 = the start value. (digits, for opacity minimum 0, maximum 100)
// parameter 1 = the finish value. (digits, for opacity minimum 0, maximum 100)
// parameter 2 = period of time between the start and finish of the effect in milliseconds. (digits or defaults to previous or 0(on first call) milliSeconds)
// parameter 3 = (optional) to scale the effect time on a specified minimum/maximum. (array, see Note 3)
// field 0 the minimum value. (digits)
// field 1 the maximum value. (digits)
// parameter 3 = (optional) the type of progression, 'sin', 'cos' or 'liner'. (string, default = 'liner')
// 'sin' progression starts fast and ends slow.
// 'cos' progression starts slow and ends fast.
//
// Note 1: Examples modes: 'left', 'top', 'width', 'height', 'opacity.
// Note 2: The default units(excepting opacity) are 'px'.
// For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
// Note 3: The scale is of particular use when re-calling the effect
// in mid progression to retain an constant rate of progression.
// Note 4: The current effect value is recorded in A.data[0].
// Note 5: A function may be called on completion of the effect by assigning the function
// to the animator intance property .Complete.
// e.g. [instance].Complete=function(){ alert(this.data[0]); };
//



// **** Functional Code(1.58K) - NO NEED to Change

function zxcAnimate(mde,obj,srt){
this.to=null;
this.obj=typeof(obj)=='object'?obj:document.getElementById(obj);
this.mde=mde.replace(/\W/g,'');
this.data=[srt||0];
return this;
}

zxcAnimate.prototype.animate=function(srt,fin,ms,scale,c){
clearTimeout(this.to);
this.time=ms||this.time||0;
this.neg=srt<0||fin<0;
this.data=[srt,srt,fin];
this.mS=this.time*(!scale?1:Math.abs((fin-srt)/(scale[1]-scale[0])));
this.c=typeof(c)=='string'?c.charAt(0).toLowerCase():this.c?this.c:'';
this.inc=Math.PI/(2*this.mS);
this.srttime=new Date().getTime();
this.cng();
}

zxcAnimate.prototype.cng=function(){
var oop=this,ms=new Date().getTime()-this.srttime;
this.data[0]=(this.c=='s')?(this.data[2]-this.data[1])*Math.sin(this.inc*ms)+this.data[1]:(this.c=='c')?this.data[2]-(this.data[2]-this.data[1])*Math.cos(this.inc*ms):(this.data[2]-this.data[1])/this.mS*ms+this.data[1];
this.apply();
if (ms<this.mS) this.to=setTimeout(function(){oop.cng()},10);
else {
this.data[0]=this.data[2];
this.apply();
if (this.Complete) this.Complete(this);
}
}

zxcAnimate.prototype.apply=function(){
if (isFinite(this.data[0])){
if (this.data[0]<0&&!this.neg) this.data[0]=0;
if (this.mde!='opacity') this.obj.style[this.mde]=Math.floor(this.data[0])+'px';
else zxcOpacity(this.obj,this.data[0]);
}
}

function zxcOpacity(obj,opc){
if (opc<0||opc>100) return;
obj.style.filter='alpha(opacity='+opc+')';
obj.style.opacity=obj.style.MozOpacity=obj.style.WebkitOpacity=obj.style.KhtmlOpacity=opc/100-.001;
}


</script>

</head>

<body>
<img id="tst" src="http://www.vicsjavascripts.org.uk/StdImages/One.gif" width="50" height="50" />
<img id="tst2" src="http://www.vicsjavascripts.org.uk/StdImages/Two.gif" width="50" height="50" />

<script type="text/javascript">
/*<![CDATA[*/

function Glow(o){
this.f1=o.Fade1;
this.ms1=o.Duration1;
this.hold1=o.Hold1;
this.f2=o.Fade2;
this.ms2=o.Duration2;
this.hold2=o.Hold2;
this.fade=new zxcAnimate('opacity',document.getElementById(o.ID));
}

Glow.prototype={

fade1:function(){
var oop=this;
this.fade.animate(this.f2,this.f1,this.ms1);
setTimeout(function(){ oop.fade2(); },this.hold1+this.ms1);
},

fade2:function(){
var oop=this;
this.fade.animate(this.f1,this.f2,this.ms2);
setTimeout(function(){ oop.fade1(); },this.hold2+this.ms2);
}

}

var G1=new Glow({
ID:'tst',
Fade1:100,
Duration1:1000,
Hold1:2000,
Fade2:50,
Duration2:1000,
Hold2:2000
});

G1.fade1();

var G2=new Glow({
ID:'tst2',
Fade1:100,
Duration1:1000,
Hold1:10,
Fade2:10,
Duration2:1000,
Hold2:5000
});

G2.fade1();

/*]]>*/
</script>

</body>

</html>

mrfanatastikk
08-01-2010, 06:16 PM
Great!! Thank you so much! It works wonders!



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