navi_off=new Array();
navi_on=new Array();
title_on=new Array();

	if (document.images){
		navi_off[1]=new Image;navi_off[1].src="http://www.weebit.co.jp/blog/images/navi1_off.gif";
		navi_off[2]=new Image;navi_off[2].src="http://www.weebit.co.jp/blog/images/navi2_off.gif";
		navi_off[3]=new Image;navi_off[3].src="http://www.weebit.co.jp/blog/images/navi3_off.gif";
		navi_off[4]=new Image;navi_off[4].src="http://www.weebit.co.jp/blog/images/navi4_off.gif";

		navi_on[1]=new Image;navi_on[1].src="http://www.weebit.co.jp/blog/images/navi1_on.gif";
		navi_on[2]=new Image;navi_on[2].src="http://www.weebit.co.jp/blog/images/navi2_on.gif";
		navi_on[3]=new Image;navi_on[3].src="http://www.weebit.co.jp/blog/images/navi3_on.gif";
		navi_on[4]=new Image;navi_on[4].src="http://www.weebit.co.jp/blog/images/navi4_on.gif";

	}


function naviOn(id){
	if (document.images) {
			document.images['navi'+id].src=navi_on[id].src;
	}
}

function naviOff(id){
	if (document.images) {
			document.images['navi'+id].src=navi_off[id].src;
	}
}