function showSection(sectNum) {
//        sectNum is 1  -- Section #1
//        sectNum is 2  -- Section #2
//        sectNum is 3  -- Section #3

		var fldPlus = document.getElementById("aExp" + sectNum);
//		var fldMinus = document.getElementById("spanMinus" + sectNum);
		var fldDiv = document.getElementById("divBlock" + sectNum);

//        alert('aExp' + sectNum + ' control innerText: ' + fldPlus.innerText);
        
		if(fldDiv.style.display == 'none')
		    fldDiv.style.display = 'block';
		else {
		    fldDiv.style.display = 'none';
		}
	}

	function changeImages() {
		if (document.images) {
			for (var i=0; i<changeImages.arguments.length; i+=2) {
				document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			}
		}
	}