// JavaScript Controls for Mohunlall.com main page

var newsBlocksArray = new Array("news1", "news2", "news3", "news4", "news5", "news6"); 
var currentNewsBlock = newsBlocksArray[(newsBlocksArray.length - 1)];
var allShown = false; 

function showNewsBlock(newsID) 
{
	if (currentNewsBlock != null)
	{
		hideNewsBlock(currentNewsBlock); 	
	}
	document.getElementById(newsID).style.display = "block"; 	
	currentNewsBlock = newsID; 
}

function hideNewsBlock(newsID)
{
	document.getElementById(newsID).style.display = "none"; 
}

function hideAllOldNews() 
{
	if (allShown) 
	{
		for (var i=0; i < newsBlocksArray.length; i++) 
		{
			document.getElementById(newsBlocksArray[i]).style.display = "none"; 	
		}
		document.getElementById(currentNewsBlock).style.display = "block"; 
		allShown = false;
	}
}

function showAllOldNews()
{
	if (!allShown) 
	{
		for (var i=0; i < newsBlocksArray.length; i++) 
		{
			document.getElementById(newsBlocksArray[i]).style.display = "block"; 	
		}
		allShown = true; 
	}
}

function previousNewsBlock() 
{
	if (!allShown) 
	{
		var currentIndex = newsBlocksArray.indexOf(currentNewsBlock); 
		var nextIndex = currentIndex + 1; 
		if (nextIndex != newsBlocksArray.length) 
		{
			showNewsBlock(newsBlocksArray[nextIndex]); 
		} else 
		{
			showNewsBlock(newsBlocksArray[0]); 	
		}
	}
}

function nextNewsBlock() 
{
	if (!allShown) 
	{
		var currentIndex = newsBlocksArray.indexOf(currentNewsBlock); 
		var nextIndex = currentIndex - 1;
		if (nextIndex >= 0)
		{
			showNewsBlock(newsBlocksArray[nextIndex]); 
		} else 
		{
			showNewsBlock(newsBlocksArray[newsBlocksArray.length -1]); 	
		}
	}
}