function mrgo(id) {
	var id;
	document.getElementById('mr1').className = "item_active off";
	document.getElementById('mr2').className = "item_active off";
	document.getElementById('mr3').className = "item_active off";
	document.getElementById('mr4').className = "item_active off";
	document.getElementById(id).className = "item_active block";
}

function collapse(x) {
	document.getElementById(x).style.display = "block";	
}

function collapseov(x) {
	document.getElementById(x).style.display = "none";
}

function showhidden(id) {
	if(document.getElementById( id ).style.display == 'none')
	{
		document.getElementById( id ).style.display = '';
	}
	else
	{
		document.getElementById( id ).style.display = 'none';
	}
}