//navigation rollover
if(navigator.appVersion.charAt(0) >=3){
	var mnavimg = new Array();
	
	for( i = 0 ; i < 18 ; i++ ){
		mnavimg[i] = new Image();
	}
	
	mnavimg[0].src= directory + "common/images/mainnavi01_off.gif";
	mnavimg[1].src= directory + "common/images/mainnavi01_on.gif";
	mnavimg[2].src= directory + "common/images/mainnavi02_off.gif";
	mnavimg[3].src= directory + "common/images/mainnavi02_on.gif";
	mnavimg[4].src= directory + "common/images/mainnavi03_off.gif";
	mnavimg[5].src= directory + "common/images/mainnavi03_on.gif";
	mnavimg[6].src= directory + "common/images/mainnavi04_off.gif";
	mnavimg[7].src= directory + "common/images/mainnavi04_on.gif";
	mnavimg[8].src= directory + "common/images/mainnavi05_off.gif";
	mnavimg[9].src= directory + "common/images/mainnavi05_on.gif";
	mnavimg[10].src= directory + "common/images/mainnavi06_off.gif";
	mnavimg[11].src= directory + "common/images/mainnavi06_on.gif";
	mnavimg[12].src= directory + "common/images/mainnavi07_off.gif";
	mnavimg[13].src= directory + "common/images/mainnavi07_on.gif";
	mnavimg[14].src= directory + "common/images/mainnavi08_off.gif";
	mnavimg[15].src= directory + "common/images/mainnavi08_on.gif";
	mnavimg[16].src= directory + "common/images/mainnavi09_off.gif";
	mnavimg[17].src= directory + "common/images/mainnavi09_on.gif";
	
}

/* 下層mainnavi */
function mnavi(dim,cnt){
	if(navigator.appVersion.charAt(0) >= 3 ){
		document.images[dim].src=mnavimg[cnt].src;
	}
}