function showFocus(num) {
	for(var id = 1;id<=12;id++) {
		var fpid="focusPic"+id;
		var fnid="focusnav"+id;
		if(id==num){
			try{document.getElementById(fpid).style.display="block"}catch(e){};
			try{document.getElementById(fnid).className="active"}catch(e){};
		} else {
			try{document.getElementById(fpid).style.display="none"}catch(e){};
			try{document.getElementById(fnid).className=""}catch(e){};
		}
	}
}