do a view source on this page.

This image has a white background. this is the reverse of the technique I use for partially bleaching an image so that I can use it as a background. the variable opacity is applied to the image itself.
In Paint Shop Pro (or it could be Photoshop), I use screen on the layer, and set the opacity on the white foreground layer and use the image as a background raster layer.

There are 3 CSS variables to tweak style="filter:alpha(opacity=100);-moz-opacity:1.0;opacity: 1.0;", 2 for different versions of mozilla firefox, and 1 for IE. IE is the complicated-looking one. IE has some boxing problems in that it has some white underhang. This works on Chrome, IE, Opera, Firefox, Safari