function change_map(a) {
 var s = document.getElementById('map_img').src;
 re = /(sam_reg_map_)(\d+)(.gif)/;
 s = s.replace(re, "sam_reg_map_" + a + ".gif");
 document.getElementById('map_img').src = s;
}


function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

function preloadImages() {
        if (document.images) {
                map_01_hvorostyanski_over = newImage("/map/map_01-hvorostyanski_over.gif");
                map_01_novokuibyshevsk_over = newImage("/map/map_01-novokuibyshevsk_over.gif");
                map_01_shigonski_over = newImage("/map/map_01-shigonski_over.gif");
                map_01_krasnoarmeiski_over = newImage("/map/map_01-krasnoarmeiski_over.gif");
                map_01_neftegorski_over = newImage("/map/map_01-neftegorski_over.gif");
                map_01_alekseevski_over = newImage("/map/map_01-alekseevski_over.gif");
                map_01_pestravski_over = newImage("/map/map_01-pestravski_over.gif");
                map_01_shentalinski_over = newImage("/map/map_01-shentalinski_over.gif");
                map_01_bolsheglushicki_over = newImage("/map/map_01-bolsheglushicki_over.gif");
                map_01_bolshechernigovski_over = newImage("/map/map_01-bolshechernigovski_o.gif");
                map_01_pohvistnevo_over = newImage("/map/map_01-pohvistnevo_over.gif");
                map_01_kinel_over = newImage("/map/map_01-kinel_over.gif");
                map_01_isaklinski_over = newImage("/map/map_01-isaklinski_over.gif");
                map_01_otradnyi_over = newImage("/map/map_01-otradnyi_over.gif");
                map_01_kinel_cherkasski_over = newImage("/map/map_01-kinel-cherkasski_ove.gif");
                map_01_chelno_vershinski_over = newImage("/map/map_01-chelno-vershinski_ov.gif");
                map_01_klyavlinski_over = newImage("/map/map_01-klyavlinski_over.gif");
                map_01_samara_over = newImage("/map/map_01-samara_over.gif");
                map_01_volgski_over = newImage("/map/map_01-volgski_over.gif");
                map_01_kamyshlinski_over = newImage("/map/map_01-kamyshlinski_over.gif");
                map_01_kinelski_over = newImage("/map/map_01-kinelski_over.gif");
                map_01_koshkinski_over = newImage("/map/map_01-koshkinski_over.gif");
                map_01_elhovski_over = newImage("/map/map_01-elhovski_over.gif");
                map_01_sergievsk_over = newImage("/map/map_01-sergievsk_over.gif");
                map_01_bogatovski_over = newImage("/map/map_01-bogatovski_over.gif");
                map_01_borski_over = newImage("/map/map_01-borski_over.gif");
                map_01_pohvistnevski_over = newImage("/map/map_01-pohvistnevski_over.gif");
                map_01_privolgski_over = newImage("/map/map_01-privolgski_over.gif");
                map_01_stavropolski_over = newImage("/map/map_01-stavropolski_over.gif");
                map_01_toliytti_over = newImage("/map/map_01-toliytti_over.gif");
                map_01_oktyabrsk_over = newImage("/map/map_01-oktyabrsk_over.gif");
                map_01_bezenchukski_over = newImage("/map/map_01-bezenchukski_over.gif");
                map_01_krasnoyarski_over = newImage("/map/map_01-krasnoyarski_over.gif");
                map_01_gigulevsk_over = newImage("/map/map_01-gigulevsk_over.gif");
                map_01_syzranski_over = newImage("/map/map_01-syzranski_over.gif");
                map_01_syzran_over = newImage("/map/map_01-syzran_over.gif");
                map_01_chapaevsk_over = newImage("/map/map_01-chapaevsk_over.gif");
        }
}