function on(gc){
	document.getElementById("img_"+gc).src="/templates/megoplant/images/mn_"+gc+"_.gif";
	document.getElementById("link_"+gc).className="mn_a";
}
function off(gc){
	document.getElementById("img_"+gc).src="/templates/megoplant/images/mn_"+gc+".gif";
	document.getElementById("link_"+gc).className="mn";
}