In the previous sample we discussed about CSS Opacity property that provides the functiolaity to set Div background transparent. But it works only FireFox or Opera web browsers. To apply the effect of opacity or transparency in Internet Explorer also you can use the CSS Filter. Following are the two ways to apply the CSS Filters that set the Alpha property value over the Div tag background:
filter:Alpha(opacity=50);
or
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50);