function getIDFromURL(theURL){
	var theURLParts =  theURL.split('/');
	for(i=1; i<theURLParts.length; i++){
		if(theURLParts[i] == 'id'){
			return theURLParts[i+1];
			break;
		}
	}
	return false;
}

function setNavState(navDiv){
	var currentURL = document.location.href.toString();
	var currentID = getIDFromURL(currentURL);
	var navDiv = document.getElementById(navDiv);
	var navLinks = navDiv.getElementsByTagName("a");
	for(x=0; x<navLinks.length; x++){
		if(getIDFromURL(navLinks[x].href) == currentID){
			navLinks[x].className += 'On';
		}
	}
}