function showThisNewsBlock(newsLink, newsBlockId) {
	newsBlocks = document.getElementById('news-blocks-content').children;
	newsBlocksLinks = newsLink.parentNode.parentNode.children;
	for(var i = 0; i < newsBlocksLinks.length; i++) {
			newsBlocksLinks[i].firstChild.className = "";
	}
	
	newsLink.className = "active";
	
	for(var i = 0; i < newsBlocks.length; i++) {
		if(newsBlocks[i].id == newsBlockId) {
			showElement(newsBlocks[i]);
		} else {
			hideElement(newsBlocks[i]);
		}
	}
}

function showElement(element) {
	element.style.display = "block";
}

function hideElement(element) {
	element.style.display = "none";
}