function switchdisplay(element,element2) {
	if (document.getElementById(element).style.display != 'block') { 
		document.getElementById(element).style.display = 'block'; 
		element2.className='sidownloads_category_active';
	} 
	else { 
		document.getElementById(element).style.display = 'none'; 
		element2.className='sidownloads_category';
	}
}