var image1=new Array(6);
var image2=new Array(6);

for(i=1;i<8;i++){
	image1[i]=new Image();
	image1[i].src="img/menu"+i+".gif";
}

for(i=1;i<8;i++){
	image2[i]=new Image();
	image2[i].src="img/menu"+i+"_o.gif";
}

function changeImage1(imageArea,no){
	document.images[imageArea].src=image1[no].src;
}

function changeImage2(imageArea,no){
	document.images[imageArea].src=image2[no].src;
}