var selectedCategory;
function selectCategory(a) {
	selectedCategory=a.parentNode;
	if( a.parentNode.className=='selected')
		selectedCategory.className='';
	else
		selectedCategory.className='selected';	
}

/*
function selectCategory(a) {
	if (selectedCategory!=undefined){ 
		if( a.parentNode.className=='selected')
			selectedCategory.className='';
		else
			selectedCategory.className='selected';
	}
	else{
		selectedCategory=a.parentNode;		
		selectedCategory.className='selected';
	}
}*/