function select_item(elementId, refs, node_id) {
	reset_all_blocks();
	document.getElementById(elementId).className='active';
	document.getElementById(elementId+"li").className='active';
	document.getElementById(elementId+"link").style.display='block';
	for (var i=0; i<refs.length; i++) {
		document.getElementById(refs[i]).className='hot';
		document.getElementById(refs[i]+"li").className='hot';
	}
	change_refblock(elementId);
	change_portfolioImg(elementId,node_id);
	return false;
}

function change_refblock(elementId) {
	var ref = document.getElementById('ref');
	ref.innerHTML = all_blocks[elementId][0];
	resizeContent();
	return;
}

function reset_all_blocks() {
	for (var key in all_blocks) {
		document.getElementById(key).className='';
		document.getElementById(key+"li").className='';
		document.getElementById(key+"link").style.display='none';
	}
	return;
}