// JavaScript Document
// JavaScript Document

var currState;
function showSubnav(targetID) {
try{
	if (currState) {
		document.getElementById(currState).style.visibility = "hidden";
	}
	document.getElementById(targetID).style.visibility = "visible";
	currState = targetID;
}
	catch(ex)
	{
	//nothing 
	}
}

function hideSubnav() {
try{
	document.getElementById(currState).style.visibility = "hidden";
	}
	catch(ex)
	{
	//nothing
	}
	
}