addEvent(window, 'load', init);

function init() {
	init_rollovers();
	external_links();
	nav_bg = new Image();
	nav_bg.src = "/images/bg-nav-on.png";
}

function jump(e) {
	var loc = e.options[e.selectedIndex].value;
	if (loc) eval("location='"+loc+"'");
	else e.selectedIndex = 0;
	return false;
}

function external_links() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName('a');
	for (var i = 0; i < anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute('href') && anchor.getAttribute('rel') == 'external') {
			anchor.target = '_blank';
		}
	}
}

function init_rollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'rollover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace('.gif', '-on.gif');

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('-on.gif','.gif');
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

var today = new Date();
function cal(month, year) {
	if (!month) month = today.getMonth() + 1;
	if (!year) year = today.getFullYear();
	var calHTML = new Ajax.Updater('cal', '/calendar/mini/',{method:'get', parameters: 'year=' + year + '&month=' + month});
}

sfHover = function() {
	var sfEls = document.getElementById('nav').getElementsByTagName('li');
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=' sfhover';
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(' sfhover\\b'), '');
		}
	}
}
if (window.attachEvent) window.attachEvent('onload', sfHover);