try {
	var left_nav_links = false;
	var left_nav_highlighted_link = false;
	
	function leftNavInit() {
		if ( !left_nav_links ) {
			left_nav_links = new Array();
			var tags = document.getElementById('left_nav').getElementsByTagName('A');
			for ( var i = 0; i < tags.length; i++ ) 
				left_nav_links[tags[i].href] = tags[i];
		}
	}

	function leftNavHighlight(link) {
/*		if (document.getElementById('nav_' + link) != 'undefined') {
			nlink = document.getElementById('nav_' + link);
			if (nlink != 'undefined' && nlink != null) {
				nlink.className = 'left-navigation-item-selected';	
			}
		}
*/	}

	function menuHandle(option) {
		// Since there are currently only two expandable options this is the simple solution:
		if (option === 'pregc') {
			var openOption = document.getElementById('pregc_collapse');
			var openSub = document.getElementById('pregnancy_calendar_sub');

		}
		if (openOption.innerHTML == '[-]') {
			openOption.innerHTML = '[+]';
			openSub.style.display = 'none';
		} else {
			openOption.innerHTML = '[-]';
			openSub.style.display = 'block';
		}
	}
	
	
	//var left_nav_current_page = document.location.path;
	//left_nav_current_page = location.href;
	//if ( left_nav_links[left_nav_current_page] )
	//	leftNavHighlight(left_nav_links[left_nav_current_page]);
		
} catch(e) {
	alert(e.message);
}