function expand(sect, el, imgNum) {
	whichEl = getObj(sect + el + "Child");
	var imColl = getAllTags('IMG', sect + 'imEx');
	whichIm = imColl[imgNum];

	divColl = getAllTags('DIV', sect);

	// loop through the images resetting all to closed EXCEPT selected image

	for (i=0; i<imColl.length; i++) {
		if (imColl[i] != whichIm) {
			imColl[i].src = "images/greytriangle.gif";
			imColl[i].width="20";
			imColl[i].height="20";
		} 
	}

	// loop through the divisions setting appropriately for this section

	for (i=0; i<divColl.length; i++) {
		if (whichEl == divColl[i]) {
			if (whichEl.style.display == "block") {
				whichEl.style.display = "none";
				whichIm.src = "images/greytriangle.gif";
				whichIm.width="20";
				whichIm.height="20";        
			}
			else {
				whichEl.style.display = "block";
				whichIm.src = "images/cf_twistie1_r1_c2.gif";
				whichIm.width="15";
				whichIm.height="12"; 
			}
		}
		else {
			if (divColl[i].className == "child") divColl[i].style.display = "none";
		}
	} // for
}