Controling Opacity

I have found this very helpful in doing "flash-like" java scripts driven by user input. Takes 1 minute to create transition effect lib with this function.

Enjoy!


P.S.: Oh!
The only thing left for you to implement isIE()!!!!!

function setObjectOpacity(obj, opacity)
{
 //IE
 if (isIE())
  obj.style.filter = "alpha(opacity:"+opacity+")";
 else
 {
   opacity = (opacity == 100)?99.999:opacity;//99.9 for Firefox flicker bug

   // Konqueror, Safari
   obj.style.KHTMLOpacity = opacity / 100;
   // Old Mozilla and Firefox
   obj.style.MozOpacity = opacity / 100;
   // CSS3,  Safari , new Firefox (Gecko)
   obj.style.opacity = opacity / 100;
 }//else
}