function setTab() {
	var curr_page = document.body.id; // Get current page id.

	var x = document.getElementById('nav').getElementsByTagName('a'); // Get all navigation links.
	var x_len = x.length;

	var i = 0;

	for (i = 0; i < x_len; ++i) { // Loop navigation elements.
		if (x[i].rel == curr_page) { // Check the rel tag against the current page id.
			x[i].className = 'active'; // If its the same page set the class to 'active'.
		}
	}

	if (curr_page == 'snowboarding') {
		document.getElementById('logo_link').href = 'http://www.rideacademyswitzerland.com';

		document.getElementById('psia_link').href = 'http://www.aasi.org/';
		document.getElementById('psia_logo').src = 'images/aasi.jpg';
	}
}