var old=new Array('images/ru_active.gif','images/de.gif','images/ru/map.gif');
var n=new Array('images/ru_active_over.gif','images/de_over.gif','images/ru/map_over.gif');
var m1=new Array(3);
var m2=new Array(3);
for (i=0;i<=3;i++){
m1[i]=new Image();
m1[i].src=old[i];
m2[i]=new Image();
m2[i].src=n[i];
}
function on(t1){
document.images['im'+t1].src=m2[t1-1].src;
}
function off(t1){
document.images['im'+t1].src=m1[t1-1].src;
}