function showPrevious(c,d) {
	if(document.getElementById(c).style.display != "block") { document.getElementById(c).style.display = "block"; }
	else { document.getElementById(c).style.display = "none"; }
	
	if(document.getElementById(d).style.display != "block") { document.getElementById(d).style.display = "block"; }
	else { document.getElementById(d).style.display = "none"; }
}

function showNext(d) {
	if(document.getElementById(d).style.display != "block") { document.getElementById(d).style.display = "block"; }
	else { document.getElementById(d).style.display = "none"; }
}

function hideMe(d) {
	document.getElementById(d).style.display = "none";
}