View Full Version : Nereid Fade


alcaseltzerboy
02-15-2003, 04:09 AM
Could somebody please tell how to use the javascript in mouseovers "Neried Fade"?

I like that fad a lot

ThaLoCa
02-15-2003, 12:03 PM
The first code right after the <body> tag
</head>
<body>
<script>

/*
Gradual-Highlight Image Script II-
By J. Mark Birenbaum (birenbau@ugrad.cs.ualberta.ca)
Permission granted to Dynamicdrive.com to feature script in archive
For full source to script, visit http://dynamicdrive.com
*/

nereidFadeObjects = new Object();
nereidFadeTimers = new Object();

/* object - image to be faded (actual object, not name);
* destop - destination transparency level (ie 80, for mostly solid)
* rate - time in milliseconds between trasparency changes (best under 100)
* delta - amount of change each time (ie 5, for 5% change in transparency)
*/

function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
if (object != "[object]"){ //do this so I can take a string too
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);
}
}

</script>

Now use it for images:

<img src="img url" alt="your alt text" border=0 style="filter:alpha(opacity=5)" onmouseover="nereidFade(this,100,40,5)" onmouseout="nereidFade(this,10,70,5)">

Try experimenting with the NereidFade numbers!

alcaseltzerboy
02-15-2003, 07:27 PM
thanks!