function about_us_show() {

	document.getElementById('about_us_div').style.display = 'block';
	
}


function about_us_hide() {

	document.getElementById('about_us_div').style.display = 'none';
	
}


function services_show() {

	document.getElementById('services_div').style.display = 'block';
	
}


function services_hide() {

	document.getElementById('services_div').style.display = 'none';
	
}

function audience_show() {

	document.getElementById('audience_div').style.display = 'block';

}


function audience_hide() {

	document.getElementById('audience_div').style.display = 'none';

}