function house_show() {
		document.getElementById('house').style.visibility='visible'; 
	}
	function house_hide() {
		document.getElementById('house').style.visibility='hidden'; 	
	}
	function condo_show() {
		document.getElementById('condo').style.visibility='visible'; 
	}
	function condo_hide() {
		document.getElementById('condo').style.visibility='hidden'; 	
	}
	function condotel_show() {
		document.getElementById('condotel').style.visibility='visible'; 
	}
	function condotel_hide() {
		document.getElementById('condotel').style.visibility='hidden'; 	
	}