var btnFlg=0;
var btnOffImg=new Array(12);
var btnOverImg=new Array(12);
for(h=1;h<12;h++){
      btnOffImg[h]=new Image();
      btnOffImg[h].src="image/menu0"+h+".gif";
      btnOverImg[h]=new Image();
      btnOverImg[h].src="image/menu1"+h+".gif";
}
function btnOver(j){
      if(btnFlg!=j){
        document.images["imgNum"+j].src=btnOverImg[j].src;
        }
}
function btnOut(j){
        if(btnFlg!=j){
        document.images["imgNum"+j].src=btnOffImg[j].src;
        }
}
function btnClear(){
        for(k=1;k<=8;k++){
            document.images["imgNum"+k].src=btnOffImg[k].src;
 }
}