css properties for a jquery dialog

How to add the following properties to a jquery ui dialog?

 background-color:white; filter:alpha(opacity=80); -moz-opacity: 0.8; opacity: 0.8

and the dialog properties are

 $bottombar = $(".bar", "#view").dialog({ height: 475, width: '100%', modal: false,
                                    draggable: false,maximize: false , stack: true, autoOpen:false, minHeight: 30,
                                    bgiframe: true ,title: "mytest" ,resizable: false, position: 'bottom',
                                    });

O开发者_如何学Cr how to over ride the default background color of a ui dialog?

Thanks

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jQuery UI uses the theme roller to generate custom CSS for it's controls.

Check out the documentation here:

http://jqueryui.com/docs/Theming