function loadimg(){
	ON = new Array();
	ON[0]=new Image();ON[0].src='/image/bt_top1a.jpg';
	ON[1]=new Image();ON[1].src='/image/bt_actor1a.jpg';
	ON[2]=new Image();ON[2].src='/image/bt_katsudou1a.jpg';
	ON[3]=new Image();ON[3].src='/image/bt_company1a.jpg';
	ON[4]=new Image();ON[4].src='/image/bt_bosyu1a.jpg';
	ON[5]=new Image();ON[5].src='/image/bt_mail1a.jpg';
}
function over(n){
	document.images[n].src='/image/'+n+'a.jpg';
}
function out(n){
	document.images[n].src='/image/'+n+'.jpg';
}