question: synchronized void addBgImage ( Component imgComp , String imageUrl , int styles ) { if ( HTMLComponent . SUPPORT_CSS ) { add ( imgComp , imageUrl ) ; if ( ( styles & CSSEngine . STYLE_SELECTED ) != 0 ) { bgImageCompsSelected . addElement ( imgComp ) ; } if ( ( styles & CSSEngine . STYLE_UNSELECTED ) != 0 ) { bgImageCompsUnselected . addElement ( imgComp ) ; } if ( ( styles & CSSEngine . STYLE_PRESSED ) != 0 ) { bgImageCompsPressed . addElement ( imgComp ) ; } } }
target:  Adds the image to the queue, to be used as a background image for a component