if (document.images) {
    rehaboff       = new Image();
    rehaboff.src   = "../../App_Themes/lssTheme/home_rehab.jpg" ;
    rehabover     = new Image() ;
    rehabover.src = "../../App_Themes/lssTheme/home_rehab_color.jpg" ;
    nursingoff       = new Image();
    nursingoff.src   = "../../App_Themes/lssTheme/home_nursing.jpg" ;
    nursingover     = new Image() ;
    nursingover.src = "../../App_Themes/lssTheme/home_nursing_color.jpg" ;
    residentialoff       = new Image();
    residentialoff.src   = "../../App_Themes/lssTheme/home_residential.jpg" ;
    residentialover     = new Image() ;
    residentialover.src = "../../App_Themes/lssTheme/home_residential_color.jpg" ;
}

function buttonover( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "over.src" );
    }
}
function buttonoff ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "off.src" );
    }
}