/*
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);
  }
}