Transparent image - is it possible in JS?

Is it possible to set transparency 开发者_StackOverflow社区of any image in javascript? And how can I do that?

If using plain javascript this should work:

function SetOpacity( imageid, opacity ) {
    var s= document.getElementById(imageid).style;
    s.opacity = ( opacity / 100 );
    s.MozOpacity = ( opacity / 100 );
    s.KhtmlOpacity = ( opacity / 100 );
    s.filter = 'alpha(opacity=' + opacity + ')';
}

Call by: SetOpacity('myImg', 50); //Half transparent

Source here

Yes.

Using jQuery:

$('#yourImageId').css('opacity', .5);