var scrolling = false;

$(document).ready(function () 
{
	initNewsScroller ();
	
});


function scrollNews (direct)
{
	if (scrolling) return false;
	
	var blocksCount =  $("td.newsItem").size();

	//blocksCount(blocksCount);
	
	var currentTop = parseInt($("#newsSlideBox").css("left"));
	var newsBlockWidth = parseInt($("td.newsItem:first").css("width"));		
	if (direct == "left") 	{
		var newTop = currentTop + 340;
	}
	if (direct == "right") 	{
		var newTop = currentTop - 340 ;
	}
		scrolling = true;
	
	$("#newsSlideBox").animate({"left": newTop}, 500, "linear", function()
	{
		scrolling = false;
		
		if (newTop < 0) $("#newsLeftBtn").css("visibility", "visible");
		else $("#newsLeftBtn").css("visibility", "hidden");
		
		if (newTop > ((-1)*(blocksCount-1) * 340)) $("#newsRightBtn").css("visibility", "visible");
		else $("#newsRightBtn").css("visibility", "hidden");
	});	
}

function initNewsScroller () {
		
	$('#newsLeftBtn').click(function () {
		scrollNews ("left");
		
		return false;
	})
	$('#newsRightBtn').click(function () {
		scrollNews ("right");
		return false;
	})
}