function timeDisa () {

	var time = new Date();
	var hour = time.getHours();
	var day = time.getDay();

	if (hour>=18 || hour<=9 || day == 6 || day == 0) {
		document.getElementById("header").id = 'header2';
	}else {
		document.getElementById("header").id = 'header3';
	}
	return;
}