if(document.images){
 var onimg=new Array("/images/header_site_map_b.gif","/images/header_mail_b.gif","/images/side_navi_01b.gif","/images/side_navi_02b.gif","/images/side_navi_03b.gif","/images/side_navi_04b.gif","/images/side_navi_05b.gif","/images/side_navi_06b.gif","/images/side_navi_07b.gif","/images/side_navi_08b.gif","/images/side_navibana_01b.jpg","/images/side_navibana_02b.jpg","/images/side_navibana_03b.jpg","/images/side_rss_b.gif","/images/bana01b.jpg","/images/bana02b.jpg","/images/header_navi01b.gif","/images/header_navi02b.gif","/images/header_navi03b.gif","/images/header_navi04b.gif","/images/header_navi05b.gif","/images/header_navi06b.gif","/images/header_navi07b.gif")
 var offimg=new Array("/images/header_site_map_a.gif","/images/header_mail_a.gif","/images/side_navi_01a.gif","/images/side_navi_02a.gif","/images/side_navi_03a.gif","/images/side_navi_04a.gif","/images/side_navi_05a.gif","/images/side_navi_06a.gif","/images/side_navi_07a.gif","/images/side_navi_08a.gif","/images/side_navibana_01a.jpg","/images/side_navibana_02a.jpg","/images/side_navibana_03a.jpg","/images/side_rss_a.gif","/images/bana01.jpg","/images/bana02.jpg","/images/header_navi01a.gif","/images/header_navi02a.gif","/images/header_navi03a.gif","/images/header_navi04a.gif","/images/header_navi05a.gif","/images/header_navi06a.gif","/images/header_navi07a.gif")
 var onsel=new Array();
 var offsel=new Array();
 for (i=0; i<onimg.length; i++){
 onsel[i]=new Image();
 offsel[i]=new Image();
 onsel[i].src=onimg[i];
 offsel[i].src=offimg[i];
}
}
function onSelect(n){
 if(document.images){
     document.images["imge" + n].src=onsel[n].src;
}
}
function offSelect(n){
 if(document.images){
     document.images["imge" + n].src=offsel[n].src;
}
}