/**
 * メニューイメージの変更
 */
function cngImg(num) {
	if (num == 1) {
		document.images[0].src="images/home_on.png";
	}
	else if (num == 2) {
		document.images[0].src="images/home.png";
	}
	else if (num == 3) {
		document.images[1].src="images/whatsnew_on.png";
	}
	else if (num == 4) {
		document.images[1].src="images/whatsnew.png";
	}
	else if (num == 5) {
		document.images[2].src="images/company_on.png";
	}
	else if (num == 6) {
		document.images[2].src="images/company.png";
	}
	else if (num == 7) {
		document.images[3].src="images/idea_on.png";
	}
	else if (num == 8) {
		document.images[3].src="images/idea.png";
	}
	else if (num == 9) {
		document.images[4].src="images/freesoft_on.png";
	}
	else if (num == 10) {
		document.images[4].src="images/freesoft.png";
	}
	else if (num == 11) {
		document.images[5].src="images/mashup_on.png";
	}
	else if (num == 12) {
		document.images[5].src="images/mashup.png";
	}
	else if (num == 13) {
		document.images[6].src="images/link_on.png";
	}
	else if (num == 14) {
		document.images[6].src="images/link.png";
	}
}