function over(a){
	switch(a){
		case 1:
			document.top.src="../image/menu-top-b.jpg";
			break;
		case 2:
			document.pro.src="../image/menu-pro-b.jpg";
			break;
		case 3:
			document.dia.src="../image/menu-dia-b.jpg";
			break;
		case 4:
			document.poe.src="../image/menu-poe-b.jpg";
			break;
		case 5:
			document.gal.src="../image/menu-gal-b.jpg";
			break;
		case 6:
			document.not.src="../image/menu-not-b.jpg";
			break;
		case 7:
			document.lin.src="../image/menu-lin-b.jpg";
			break;
	}
}
function out(a){
	switch(a){
		case 1:
			document.top.src="../image/menu-top-a.jpg";
			break;
		case 2:
			document.pro.src="../image/menu-pro-a.jpg";
			break;
		case 3:
			document.dia.src="../image/menu-dia-a.jpg";
			break;
		case 4:
			document.poe.src="../image/menu-poe-a.jpg";
			break;
		case 5:
			document.gal.src="../image/menu-gal-a.jpg";
			break;
		case 6:
			document.not.src="../image/menu-not-a.jpg";
			break;
		case 7:
			document.lin.src="../image/menu-lin-a.jpg";
			break;
	}
}