/*---------------------------------------------------------------------------
 | File:    mouse.js
 |
 | Author:  Greg Crider
 | Date:    20 November 2004
 |
 | Purpose: Provide mouse event image rollovers.
 |
 | Change History:
 *---------------------------------------------------------------------------*/

button_img = new Array( 10 ) ;

button_img[ 'contactus' ]   = new Image( 81, 18 ) ;  button_img[ 'contactus' ].src   = "images/button_contactus_18x81.jpg" ;
button_img[ 'contactuson' ] = new Image( 81, 18 ) ;  button_img[ 'contactuson' ].src = "images/button_contactus_on_18x81.jpg" ;
button_img[ 'engr' ]        = new Image( 204, 18 ) ; button_img[ 'engr' ].src        = "images/button_engr_18x204.jpg" ;
button_img[ 'engron' ]      = new Image( 204, 18 ) ; button_img[ 'engron' ].src      = "images/button_engr_on_18x204.jpg" ;
button_img[ 'smallbus' ]    = new Image( 121, 18 ) ; button_img[ 'smallbus' ].src    = "images/button_smallbus_18x121.jpg" ;
button_img[ 'smallbuson' ]  = new Image( 121, 18 ) ; button_img[ 'smallbuson' ].src  = "images/button_smallbus_on_18x121.jpg" ;
button_img[ 'startups' ]    = new Image( 128, 18 ) ; button_img[ 'startups' ].src    = "images/button_startups_18x128.jpg" ;
button_img[ 'startupson' ]  = new Image( 128, 18 ) ; button_img[ 'startupson' ].src  = "images/button_startups_on_18x128.jpg" ;
button_img[ 'home' ]        = new Image( 53, 18 ) ;  button_img[ 'home' ].src        = "images/button_home_18x53.jpg" ;
button_img[ 'homeon' ]      = new Image( 53, 18 ) ;  button_img[ 'homeon' ].src      = "images/button_home_on_18x53.jpg" ;


function mouseImg( which, ison )
{
    var suffix = "" ;

    if ( ison ) {
        suffix = "on" ;
    }

    document.images[ which ].src = button_img[ which + suffix ].src ;

    return true ;
}