var zuhause = 'home' ;
var homePath = '' ;

function setHome( home ) {
    zuhause = home ;
}

function setHomePath( home ) {
    homePath = home ;
}


function rollover( image_name ) {
    document.images[ image_name ].src = homePath + 'images/' + image_name + '_black.png'  ;
    if ( zuhause == null || zuhause == '' ) return ;
    document.images[ zuhause ].src =  homePath + 'images/' + zuhause + '_red.png'  ; 
}

function rollout( image_name ) {
    document.images[ image_name ].src = homePath + 'images/' + image_name + '_red.png'  ;
    if ( zuhause == null || zuhause == '' ) return ;
    document.images[ zuhause ].src =  homePath + 'images/' + zuhause + '_black.png'  ; 
}