<!--
/* 春：３月〜５月　夏：６月〜８月　秋：９月〜１１月　冬：１２月〜２月 */
function changeMonth() {
	// ランダムに画像を表示する
	var jmp = new Array();
	var img = new Array();
	var myDate = new Date();
	var myM = myDate.getMonth() + 1;

	// ジャンプ先のアドレス(数字は画像と対応)
	jmp[0] = "http://www.shimoda-tatami.com/blog/spri-campaign.html";	// 春
	jmp[1] = "http://www.shimoda-tatami.com/blog/summer-campaign.html";				// 夏
	jmp[2] = "http://www.shimoda-tatami.com/blog/autum-campaign.html";				// 秋
	jmp[3] = "http://www.shimoda-tatami.com/blog/winter-campaign.html";		// 冬

	// 画像のアドレス(数字はジャンプ先のアドレスと対応)
	img[0] = "http://www.shimoda-tatami.com/img/spri-campaign.jpg";		// 春
	img[1] = "http://www.shimoda-tatami.com/img/summer-campaign.jpg";		// 夏
	img[2] = "http://www.shimoda-tatami.com/img/aoutumn-campaign.jpg";		// 秋
	img[3] = "http://www.shimoda-tatami.com/img/winter-campaign.jpg";		// 冬

	var n = 3;

	if( (myM >= 3) && (myM <= 5) ){
		var n = 0;
	} else if( (myM >= 6) && (myM <= 8) ) {
		var n = 1;
	} else if( (myM >= 9) && (myM <= 11) ) {
		var n = 2;
	}

	var html = '<a href="' + jmp[n] + '"><img src="' + img[n] + '" border="0"></a>';
	document.getElementById("campaign").innerHTML = html;
}
//-->