function switch1(div) {
			var option=['homepage','community_link','amenities_link','yachtclub_link','about_link','contact_link'];
			for(var i=0; i<option.length; i++) {
			if (document.getElementById(option[i])) {
			obj=document.getElementById(option[i]);
			obj.style.display=(option[i]==div)? "block" : "none";	}	}	}