/*****ヘッダーナビゲーションイメージのプレロード*****/

var Number = 4;     //ボタンの数
var FileDir = "http://" + document.domain + "/kyoutaru/htdocs/";
// var FileDir = "http://" + document.domain + "/";
var FileURL = location.href.substring(FileDir.length,location.href.length);
var FileNum =  FileURL.split("/").length;
if( FileNum == 1 ){ var Dir = "common/img/" };     //第1階層用
if( FileNum == 2 ){ var Dir = "../common/img/" };     //第2階層用
if( FileNum == 3 ){ var Dir = "../../common/img/" };    //第3階層用
if( FileNum == 4 ){ var Dir = "../../../common/img/" };    //第3階層用
if( FileNum == 5 ){ var Dir = "../../../../common/img/" };    //第3階層用
if( FileNum == 6 ){ var Dir = "../../../../../common/img/" };    //第3階層用
var Roop;
OnImg = new Array();
OffImg = new Array();

for( Roop = 1; Roop <= Number; Roop ++ ){
	 OnImg[ Roop ] = new Image();
	 OnImg[ Roop ].src = Dir + "navi" + Roop + "_on.gif";
	 OffImg[ Roop ] = new Image();
	 OffImg[ Roop ].src = Dir + "navi" + Roop + ".gif";
}

/***** ON *****/

function NaviOn( ImgName ){
	document.images[ ImgName ].src = Dir + ImgName + "_on.gif";
}

/***** OFF *****/

function NaviOff( ImgName ){
	document.images[ ImgName ].src = Dir + ImgName + ".gif";
}