<!--//

if (document.images) {
	curl = document.URL;
	pmturl = "https://bigbucks.itcs.northwestern.edu";
	
	if (curl.indexOf(pmturl) == -1) {
		expandOn = new Image;
		expandOn.src = "images/menu_expand.gif";
		expandOff = new Image;
		expandOff.src = "images/menu_contract.gif";
	} else {
		expandOn = new Image;
		expandOn.src = "https://www.wccm2006.northwestern.edu/images/menu_expand.gif";
		expandOff = new Image;
		expandOff.src = "https://www.wccm2006.northwestern.edu/images/menu_contract.gif";
	}
}

function toggle(nr, img) {
	if (document.images) {
		if (document.images[img].src == expandOff.src) {
			document.images[img].src = expandOn.src;
		} else {
			document.images[img].src = expandOff.src;
		}
	}
	
	if (document.layers) {
		current = (document.layers[nr].display == 'block') ? 'none' : 'block';
		document.layers[nr].display = current;
	}
	else if (document.all) {
		current = (document.all[nr].style.display == 'block') ? 'none' : 'block';
		document.all[nr].style.display = current;
	}
	else if (document.getElementById) {
		vista = (document.getElementById(nr).style.display == 'block') ? 'none' : 'block';
		document.getElementById(nr).style.display = vista;
	}
}

//-->