function onoffI(){
	if(document.getElementById('oI').style.display == "block"){
		document.getElementById('oI').style.display = 'none';
		document.getElementById('contef').style.height = '95%';
	} else{
		document.getElementById('oI').style.display = 'block';
		document.getElementById('contef').style.height = '500px';
	}
}