current=7;

var offsrcs = new Array
                ("../layout/navigation/navi_1_01.jpg",
                 "../layout/navigation/navi_1_02.jpg",
                 "../layout/navigation/navi_1_03.jpg",
                 "../layout/navigation/navi_1_04.jpg",
                 "../layout/navigation/navi_1_05.jpg",
                 "../layout/navigation/navi_1_06.jpg",
                 "../layout/navigation/navi_1_07.jpg");

var onsrcs = new Array
                ("../layout/navigation/navi_2_01.jpg",
                 "../layout/navigation/navi_2_02.jpg",
                 "../layout/navigation/navi_2_03.jpg",
                 "../layout/navigation/navi_2_04.jpg",
                 "../layout/navigation/navi_2_05.jpg",
                 "../layout/navigation/navi_2_06.jpg",
                 "../layout/navigation/navi_2_07.jpg");
var actsrcs = new Array
                ("../layout/navigation/navi_3_01.jpg",
                 "../layout/navigation/navi_3_02.jpg",
                 "../layout/navigation/navi_3_03.jpg",
                 "../layout/navigation/navi_3_04.jpg",
                 "../layout/navigation/navi_3_05.jpg",
                 "../layout/navigation/navi_3_06.jpg",
                 "../layout/navigation/navi_3_07.jpg");

onimages = new Array(onsrcs.length);
offimages = new Array(offsrcs.length);
actimages = new Array(actsrcs.length);
imgobjects = new Array(offsrcs.length);

function button_on (nr) {if (document.images)
                        {if (current!=nr)
                        {if (imgobjects[nr])
                        {imgobjects[nr].src = onimages[nr].src}}}}

function button_off (nr) {if (document.images)
                        {if (current!=nr)
                        {if (imgobjects[nr])
                        {imgobjects[nr].src = offimages[nr].src}}}}

function button_act(nr) {if (document.images)
                        {if (imgobjects[current])
                        {imgobjects[current].src = offimages[current].src}
                        if (imgobjects[nr])
                        {imgobjects[nr].src = actimages[nr].src}
                        current=nr;}}

function LoadImages () {if (document.images)
                        {for (x=0; x< onimages.length; x++)
                        {onimages[x] = new Image();
                            onimages[x].src = onsrcs[x];}
                               for (x=0; x< offimages.length; x++)
                        {offimages[x] = new Image();
                          offimages[x].src = offsrcs[x];}
                               for (x=0; x< actimages.length; x++)
                        {actimages[x] = new Image();
                          actimages[x].src = actsrcs[x];}}}

function LoadObjects () {if (document.images)
                        {imgobjects[0] = document.home;
                         imgobjects[1] = document.unternehmen;
                         imgobjects[2] = document.verkauf;
                         imgobjects[3] = document.ankauf;
                         imgobjects[4] = document.restauration;
                         imgobjects[5] = document.kontakt;
                         imgobjects[6] = document.impressum;}}