/*
    File: expandable.css
        
    Copyright 2010,
    Richard Rasala,
    College of Computer and Information Science
    Northeastern University, Boston, MA 02115
    rasala@ccs.neu.edu
    
    September 20, 2010
*/

/*
    The background images are:
    
        expand.gif    ... plus  sign in a box
        collapse.gif  ... minus sign in a box
    
    The width and height below equals
    the width and height of each background image.
    
    The background images are assumed to be stored
    in the same directory as this CSS file.
    
    If this is not the case then the URL's below
    must be appropriately edited.
*/


/* Sets the background image to a plus icon. */
.expandnode
{
    display:inline-block;
    width: 18px;
    height: 14px;
    background-image: url('expand.gif');
    background-repeat: no-repeat;
}


/* Sets the background image to a minus icon. */
.collapsenode
{
    display:inline-block;
    width: 18px;
    height: 14px;
    background-image: url('collapse.gif');
    background-repeat: no-repeat;
}

.expandable, .expandbutton, .collapsebutton,
.collapsesectionbutton {}