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

function ShowContent(d) {
	document.getElementById(d).style.display = "block";
}

function RollUpAll(){
	ShowContent('pm');
	HideContent('pm_sub');
	ShowContent('pi');
	HideContent('pi_sub');
}

function RollDown(d){
	RollUpAll();
	HideContent(d);
	ShowContent(d+'_sub');
}

function RollUp(d){
	ShowContent(d);
	HideContent(d+'_sub');
}