var imgFN = new Array("btn_h_top","btn_h_myroom","btn_h_diary","btn_h_data","btn_h_help","btn_h_logout","btn_h_exittrial");

var imgNum = imgFN.length;
var io1 = new Array(imgNum);
var io1o = new Array(imgNum);


for(i=0;i<imgNum;i++){

	io1[i] = new Image();
	io1[i].src = '/image/' + imgFN[i] + '.gif';
	io1o[i] = new Image();
	io1o[i].src = '/image/' + imgFN[i] + '_on.gif';
}

function mover(imgObj,obj_id){
	imgObj.src=io1o[obj_id].src;
}

function mout(imgObj,obj_id){
	imgObj.src=io1[obj_id].src;
}