var strOnButtonId		 = null;
var strOnButtonImage	 = null;

/*ゲレンデマップ操作*/
function gelande_map(strNumber){
	var strButtonId		 = "ge_mapctr" + strNumber;
	var strButtonImage	 = "../gelande/images/bt_gelande" + strNumber + "_on.gif";
	if(strOnButtonId){
		document.getElementById(strOnButtonId).src = strOnButtonImage;
	}
	strOnButtonId	 = "ge_mapctr" + strNumber;
	strOnButtonImage = "../gelande/images/bt_gelande" + strNumber + ".gif";
	document.getElementById(strButtonId).src	 = strButtonImage;
	document.getElementById("gelandemap").src	 = "./images/map" + strNumber + ".jpg";
	document.getElementById("gelandemap_ctr").innerHTML = "<area shape=\"rect\" coords=\"95,302,257,326\" href=\"javaScript:gelande_map_reset()\" alt=\"デフォルトマップに戻す\" />";
}
/*ゲレンデマップ初期化*/
function gelande_map_reset(){
	document.getElementById(strOnButtonId).src			 = strOnButtonImage;
	document.getElementById("gelandemap").src			 = "./images/map00.jpg";
	document.getElementById("gelandemap_ctr").innerHTML	 = "<area shape=\"rect\" coords=\"95,302,257,326\" nohref />";
	strOnButtonId		 = null;
	strOnButtonImage	 = null;
}

/*画像切り替え（ON）*/
function image_on(strNumber){
	var strButtonId		 = "ge_mapctr" + strNumber;
	var strButtonImage	 = "../gelande/images/bt_gelande" + strNumber + "_on.gif";
	document.getElementById(strButtonId).src = strButtonImage;
}

/*画像切り替え（OFF）*/
function image_off(strNumber){
	var strButtonId		 = "ge_mapctr" + strNumber;
	var strButtonImage	 = "../gelande/images/bt_gelande" + strNumber + ".gif";
	if(strOnButtonId != strButtonId){
		document.getElementById(strButtonId).src = strButtonImage;
	}
}