function getQuery(variable)
{	
	var i
	var query = window.location.search.substring(1);
	var vars = query.split("&");
	
	for (i = 0; i < vars.length; i++)
	{
		var pair = vars[i].split("=");
		if (pair[0] == variable)
		{
			return pair[1];
		}
	}
}

function hide(id)
{ document.getElementById(id).style.display = "none"; }
	
function show(id)
{ document.getElementById(id).style.display = "block"; }

function showArticle(strToPass)
{
	var linkToUpdate = location.href;
		
	linkToUpdate = linkToUpdate.substring(0,location.href.indexOf(location.search));

	var strQuery = location.search;
	
	if(strQuery.indexOf("article=") != -1)
	{ strQuery = strQuery.substring(0,strQuery.indexOf("article=")-1);}
	
	if(location.href.indexOf("?") != -1 && location.href.indexOf("?article=") == -1)
	{ location.href = linkToUpdate + strQuery + "&article=" + strToPass; }
	else
	{ location.href = linkToUpdate + "?article=" + strToPass; }
}

function hideArr()
{
	var item;
	
	for(item in blockArr)
	{ hide(blockArr[item]); }
}

if(typeof blockArr == "object")
{ hideArr(); }

if(getQuery("article"))
{
	show("block" + getQuery("article"));
	document.getElementById(getQuery("article")).className = "current";
}
else
{
	show(blockArr[0])
}