function go_print(div){
	var initBody = document.body.innerHTML;
	window.onbeforeprint = function(){
		document.getElementById("navi01").style.visibility = "hidden";
		document.body.innerHTML = document.getElementById('content').innerHTML;
		
	}

	window.onafterprint = function(){
		document.body.innerHTML = initBody;
	}
	
	window.print();
}