function initNavigations(){

	if (!document.getElementById) return

	var nvPreLoad = new Array();

	var sTempSrc;

	var nvImages = document.getElementsByTagName('img');

	var bodyId = document.body.id;

	var stayNum;

	switch(bodyId){

		case "top":

			stayNum = 1;

		break;

		case "plan":

			stayNum = 2;

		break;

		case "equipment":

			stayNum = 3;

		break;

		case "environment":

			stayNum = 4;

		break;

		case "access":

			stayNum = 5;

		break;

		case "gallery":

			stayNum = 6;

		break;

		case "outline":

			stayNum = 7;

		break;
	}

	var gNaviStaySrc = "navi-0" + stayNum + ".gif";

	for (var i = 0; i < nvImages.length; i++) {		

			if (nvImages[i].className == 'navi-on'){

				var src = nvImages[i].getAttribute('src');

				var ftype = src.substring(src.lastIndexOf('.'), src.length);

				srcStr = src.substring(src.lastIndexOf('/') + 1, src.length);

				//alert(srcStr + ":" + gNaviStaySrc);

				if(srcStr == gNaviStaySrc) {

					var hsrc = src.replace(ftype, '-on' + ftype);

					nvImages[i].setAttribute('hsrc', hsrc);

					nvImages[i].setAttribute('src', nvImages[i].getAttribute('hsrc'));

				} else {

					var hsrc = src.replace(ftype, '-on' + ftype);

					nvImages[i].setAttribute('hsrc', hsrc);

					nvPreLoad[i] = new Image();

					nvPreLoad[i].src = hsrc;

					nvImages[i].onmouseover = function() {

						sTempSrc = this.getAttribute('src');

						this.setAttribute('src', this.getAttribute('hsrc'));

					}

					nvImages[i].onmouseout = function() {

						if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('-on' + ftype, ftype);

						this.setAttribute('src', sTempSrc);				

					}

				}

			}

	}

}

/*----*/

try {

	window.addEventListener('load',initNavigations , false);

} catch(e){

	window.attachEvent('onload',initNavigations);

}