// Copyright 2008 PSI
// Authar: Jie Lu

new function() {
    var TAB_NEWS_ID = "tabContainerNews";
    var TAB_INFO_ID = "tabContainerInfoCenter";
	var TAB_AWARDS_ID = "tabContainerAwards";
    
    var lastHash = "[uninitialized]";
    var curTab = null;
    
    var syncStateWithUrl = function() {
        if(lastHash != window.location.hash) {
			if(window.location.hash == "#awards") {
				showTab(TAB_AWARDS_ID);
            } else if(window.location.hash == "#info") {
                showTab(TAB_INFO_ID);
            } else {
                showTab(TAB_NEWS_ID);
            }
            lastHash = window.location.hash;
        }
        
        window.setTimeout(syncStateWithUrl, 100);
    }
	
	var showTab = function(tabId) {
		var tab = document.getElementById(tabId);
		if(tab != curTab) {
			if(curTab != null) {
				curTab.style.display = "none";
			}
			tab.style.display = "block";
			curTab = tab;
		}
	}
    
    window.setTimeout(syncStateWithUrl, 100);
}