function openNav(navID) {
	for (i=0; i < navArray.length; i++) {
		bflag = navArray[i];
		if (bflag.indexOf(navID) != -1) {
			x = bflag.indexOf("_") + 1;
			navState = bflag.charAt(x);
			if (navState == "C") {
				document.getElementById(navID).style.display = "block";
				navFlag = "O";
			} else {
				document.getElementById(navID).style.display = "none";
				navFlag = "C";
			}
			navArray[i] = navID+"_"+navFlag;
		}
	}
}