function showhide(id) {
	if (id !== "past1") { document.getElementById("past1").style.display = "none"; }
	if (id !== "past2") { document.getElementById("past2").style.display = "none"; }
	if (id !== "past3") { document.getElementById("past3").style.display = "none"; }
	if (id !== "past4") { document.getElementById("past4").style.display = "none"; }
	if (id !== "past5") { document.getElementById("past5").style.display = "none"; }
	if (id !== "past6") { document.getElementById("past6").style.display = "none"; }
	if (id !== "past7") { document.getElementById("past7").style.display = "none"; }
	if (id !== "past8") { document.getElementById("past8").style.display = "none"; }
	if (id !== "past9") { document.getElementById("past9").style.display = "none"; }
	if (id !== "past10") { document.getElementById("past10").style.display = "none"; }
	
	if (document.getElementById(id).style.display == "none" || !document.getElementById(id).style.display) {
		document.getElementById(id).style.display = "block";
	} else {
		document.getElementById(id).style.display = "none";
	} 
}