What's wrong? I want to change the opacity if #nav .drop
is display:block;
jQuery(document).ready(function(){
if (jQuery('#nav .drop').css('display') === 'block') {
jQuery('#main').css('opacity') = '0.6';
}
});
jQuery('#main').css('opacity') = '0.6';
should be
jQuery('#main').css('opacity', '0.6');
Update:
http://jsfiddle.net/GegMk/ if you type in the text box. Click away, the opacity changes.