//preload
if (document.images){
	image01=new Image();image01.src="../image/menu01_on.gif";
	image02=new Image();image02.src="../image/menu02_on.gif";
	image03=new Image();image03.src="../image/menu03_on.gif";
	image04=new Image();image04.src="../image/menu04_on.gif";
	image05=new Image();image05.src="../image/menu05_on.gif";
	image06=new Image();image06.src="../image/menu06_on.gif";
	image07=new Image();image07.src="../image/menu07_on.gif";
	image08=new Image();image08.src="../image/go_on.gif";
	image09=new Image();image09.src="../image/go_shop_on.gif";
	image11=new Image();image11.src="./image/bust_answer01.jpg";
	image12=new Image();image12.src="./image/bust_answer02.jpg";
	image13=new Image();image13.src="./image/bust_answer03.jpg";
	image14=new Image();image14.src="./image/bust_answer04.jpg";
	image15=new Image();image15.src="./image/bust_answer05.jpg";
}


//rollover
function changeCommonImg(img, image){
	if(img)img.src=image;
}