/* *****************************************************
It is possible to override the "hide" action and revert 
to a default subnav (e.g., on the "about us" page, the 
about_us subnav should be the default, rather than "none")
To do this, include your own setTimer() function on
the page in question. E.g., for about us, include
function setTimer () {
	timeoutId = setTimeout("showSn('snAboutUs')",750);
}
****************************************************** */

var timeoutId = 0;
function showSn (snspanid) {
	cancelTimer();
	objSubnav = document.getElementById("subnav");
	objSpans = objSubnav.getElementsByTagName("span");
	for (var i=0; i<objSpans.length; i++) {
		objSpan = objSpans.item(i);
		if (objSpan.id == snspanid) {
			objSpan.style.display="block";
		} else {
			objSpan.style.display="none";
		}
	}	
}

function hideSn () {
	objSubnav = document.getElementById("subnav");
	objSpans = objSubnav.getElementsByTagName("span");
	for (var i=0; i<objSpans.length; i++) {
		objSpan = objSpans.item(i);
		objSpan.style.display="none";
	}	
}

function cancelTimer () {
	clearTimeout (timeoutId);
}

function setTimer () {
	timeoutId = setTimeout("hideSn()",750);
}