function set_font_size(size) {
	document.getElementById('main_content').style.fontSize = size + 'px';
	document.cookie = 'fontsize='+size;
	fontsize = size;
	document.getElementById('font_1_button').src = 'fileadmin/templates/main/images/font_1.jpg';
	document.getElementById('font_2_button').src = 'fileadmin/templates/main/images/font_2.jpg';
	document.getElementById('font_3_button').src = 'fileadmin/templates/main/images/font_3.jpg';
	if (fontsize == 12) {
		document.getElementById('font_1_button').src = 'fileadmin/templates/main/images/font_1_active.jpg';
	} else if (fontsize == 14) {
		document.getElementById('font_2_button').src = 'fileadmin/templates/main/images/font_2_active.jpg';
	} else if (fontsize == 16) {
		document.getElementById('font_3_button').src = 'fileadmin/templates/main/images/font_3_active.jpg';
	}
}

var location_url = document.location;


function highlight_selected_location() {
	if (location_url == 'http://lebenshilfe.ventaya-media.com/website/' || location_url == 'http://www.lebenshilfe-wohnen-herford.de/startseite.html') {
		hide_location_button('contact');
		hide_location_button('overview');
		show_location_button('homepage');
		document.getElementById('homepage_button').src = 'fileadmin/templates/main/images/homepage_active.jpg';
	} else if (location_url == 'http://www.lebenshilfe-wohnen-herford.de/kontakt.html') {
		hide_location_button('homepage');
		hide_location_button('overview');
		show_location_button('contact');
		document.getElementById('contact_button').src = 'fileadmin/templates/main/images/contact_active.jpg';
	} else if (location_url == 'http://www.lebenshilfe-wohnen-herford.de/uebersicht.html') {
		hide_location_button('homepage');
		hide_location_button('contact');
		show_location_button('overview');
		document.getElementById('overview_button').src = 'fileadmin/templates/main/images/overview_active.jpg';
	} else {
		hide_location_button('homepage');
		hide_location_button('contact');
		hide_location_button('overview');
	}
}

function show_location_button(name) {
	document.getElementById(name+'_link').style.visibility = 'visible';
	
}

function hide_location_button(name) {
	document.getElementById(name+'_link').style.visibility = 'hidden';
}

function hide_all_buttons() {
	hide_location_button('homepage');
	hide_location_button('contact');
	hide_location_button('overview');
	highlight_selected_location();
}

function set_cookie_fontsize() {
	cookiepart = document.cookie.substr(document.cookie.search('fontsize=')+9, document.cookie.length);
	fontsize = cookiepart.substr(0,cookiepart.search(';'));
	if (fontsize != 12 && fontsize != 14 && fontsize != 16) fontsize=12;
	set_font_size(fontsize);
	
}