function swapDiv(divID, group, imgID, mutEx)
{
	// When an item is clicked, it is easiest to just collapse all divs,
	//   and then expand/toggle the clicked.  If the clicked item is already expanded, then instead, 
	//   just collapse it.
	//'imgGrp".$row1['year']."', 
	//
	
	// First Collapse everything with the 'group' name in the class attribute
	//   don't collapse the clicked object; want to toggle instead

	// For mutually Exclusive, collapse divs that are NOT clicked and swap image
	divs = document.getElementsByTagName('div');
	imgs = document.getElementsByTagName('img');


	if(mutEx) {
		for (var i=0; i<divs.length; i++) {
			if (divs[i].className == group && divs[i].id != divID) {
				divs[i].style.display = 'none';
			}
		}
		for (var i=0; i<imgs.length; i++) {
			if (imgs[i].className == group && imgs[i].id != imgID) {
				imgs[i].src = "images/layout/Plus.gif";
			}
		}
	}
	
	
	// Now, toggle the particular element that was clicked.
	var el = document.getElementById(divID);
	var img = document.getElementById(imgID);
	
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
		img.src = "images/layout/Plus.gif";
	}
	else {
		el.style.display = '';
		img.src = "images/layout/Minus.gif";
	}
}