function pic_change(){
					d=new Date();
					month=d.getMonth()+1;
					document.write('<a href="/index.html"><IMG SRC="./img/hed/'+month+'.JPG" width="750" height="70" alt="名古屋市守山区の造園業：長縄造園" border="0" style="margin:0px;padding:0px;"></a>');
					}

buttonImg = new Array();
for(i=1;i<=6;i++){
	buttonImg[i]=new Image();
	buttonImg[i].src="img/btn_"+i+"_on.gif";
}
function imageOn(n){
	document.images['menu'+n].src=buttonImg[n].src
}
function imageOff(n){
	document.images['menu'+n].src="img/btn_"+n+"_off.gif";
}
// JavaScript Document