function swap(id,address) {
	if (id != 'mermaid'){
		document.getElementById('mermaid').className='mermaidbtn';
		if (id != 'contact') {
			document.getElementById(id).className=id+'btnover';
		}
	} else {
		window.location.href=address;
	}
	if (id != 'collection'){
		document.getElementById('collection').className='collectionbtn';
	}
	if (id != 'gallery'){
		document.getElementById('gallery').className='gallerybtn';
	}
	if (id != 'tech'){
		document.getElementById('tech').className='techbtn';
	}
	if (id != 'news'){
		document.getElementById('news').className='newsbtn';
		if (id != 'mermaid') {
			document.getElementById(id).className=id+'btnover';
		}
	} else {
		window.location.href=address;
	}
	if (id != 'faqs'){
		document.getElementById('faqs').className='faqsbtn';
	}
	if (id != 'dealer'){
		document.getElementById('dealer').className='dealerbtn';
	}
	if (id != 'contact'){
		document.getElementById('contact').className='contactbtn';
		if (id != 'mermaid') {
			document.getElementById(id).className=id+'btnover';
		}
	} else {
		window.location.href=address;
	}
}