var lastDiv = '';
var currentImg = '';
var lastImg = '';

function showNav(div)
{
	if(div)
		document.getElementById(div).style.display = 'inline';

	if((div != lastDiv) && (lastDiv != ''))
		hideNav(lastDiv);

	if(div)
		lastDiv = div;
}

function hideNav(div)
{
	document.getElementById(div).style.display = 'none';
}

function hideAllNav()
{
	if(lastDiv)
		document.getElementById(lastDiv).style.display = 'none';
}

var lastPost = '';
var currentImg = '';

function showPost(div)
{
	if(div)
		document.getElementById(div).style.display = 'inline';

	if((div != lastPost) && (lastPost != ''))
		hideNav(lastPost);

	if(div)
		lastPost = div;
}


function swapImage(elem,image)
{
	if(currentImg != elem)
		document.getElementById(elem).src = image;
}

function swapBlogImage(elem,image)
{
	if(currentImg != elem)
		document.getElementById(elem).src = image;
}

function clickBlogImage(elem,image1,image2)
{
	if(lastImg)
		document.getElementById(currentImg).src = lastImg;

	document.getElementById(elem).src = image1;
	currentImg = elem;
	lastImg = image2;
}

function swapClass(div,className)
{
	document.getElementById(div).className = className;
}

function swapBackground(div,imageName)
{
	document.getElementById(div).style.backgroundImage = 'url('+imageName+')';
}