how to fix opacity on IE6
how to fix opacity on IE6 This code does not work on IE6 ! filter:alpha(opacity=50); -moz-opacity:0.5; -khtml-opacity: 0.5; opacity: 0.5; And this code ! $('#description').animate({opacity: 0.0}, 1000); If you're working with opacity in jQuery, then the fadeIn , faceOut and fadeTo function should be better than animate . In your case it would be $('#description').fadeOut(1000); Or with fadeTo , $('#description').fadeOut(1000, 0.0); But it is work on IE6! :( http://jsbin.com/owisa/3 Where it is not work? Your styled element needs to have layout for the filter to render properly. Try: filter