Header Opacity Problem, Help Needed

Did you try adding the code to the part of the css file regarding the header where you specify the image?

i tried, it messed up my theme, as it stands when its perfect and default i see something like this:

<h1 id=”header”>“><?php bloginfo(‘name’); ?></h1>

i tried changing it to

<h1 id=”header”>”filter:alpha(opacity=25);-moz-opacity:0.3″
onMouseover=”high(this)” onMouseout=”low(this)”“><?php bloginfo(‘name’); ?></h1>

but it just messes up, doesnt even work. maybe im lookin at wrong spot or sometin, anyone hav ideas ?

anyone have a solution?