// FILE:  fading.js
// AUTHOR: Adam Yukio Toda

/* GLOBAL STATIC VARIABLES */

var ARTIST = "artistLinks";
var ARTIST_LINK = "artistLink";
var PAINTINGS = "paintingLink";
var COMPOSER = "composerLink";
var BW = "bwLink";
var UNDERTOW = "undertowLink"

var LEARN_ABOUT_SAUL = "learnAboutSaulLinks";
var LEARN_ABOUT_LINK = "learnAboutLink";
var GUEST_SPEAKER = "guestSpeakerLink";
var COLLECTIONS = "collectionsLink";
var OTHER_ACHIEVEMENTS = "otherAchievementsLink";
var STATEMENT = "statementLink";

function showNavigation(sectionName) {
	if (sectionName == LEARN_ABOUT_SAUL) {
		hideOrShowSection(GUEST_SPEAKER);
		hideOrShowSection(COLLECTIONS);
		hideOrShowSection(OTHER_ACHIEVEMENTS);
		hideOrShowSection(STATEMENT);
	} else if (sectionName == ARTIST) {
		hideOrShowSection(PAINTINGS);
		hideOrShowSection(COMPOSER);
		hideOrShowSection(BW);
		hideOrShowSection(UNDERTOW);
	}
}

function hideOrShowSection(sectionID) {
	try{ 	if (getObject(sectionID).style.display == "block") {
			getObject(sectionID).style.display = "none";
		} else {
			getObject(sectionID).style.display = "block";
		}
	} catch(e) {
		alert(getObject(sectionID).style.display);	
	}
}

function getObject(obj) {
	if (document.getElementById) return document.getElementById(obj);
	else if (document.all) return document.all[obj];
}


/* END OF JAVASCRIPT CODE */