function Close(oObject,oImg){
	try {
		oObject.style.display = 'none'
		oImg.src = oImg.src = "/images/expand.gif";
		oImg.alt = 'Open'
	} catch(error){}
}
function Open(oObject,oImg){
	try {
		oObject.style.display = 'block';
		oImg.src = oImg.src = "/images/collapse.gif";
		oImg.alt = 'Close';
	} catch(error) {}
}
function openById(id){
	if (document.all) {
			var oObject = document.all("div_" + id);
			var oImg = document.all('expand_' + id);		
		}	else {
			var oObject = document.getElementById("div_" + id);
			var oImg = document.getElementById('expand_' + id);
		}
		Open(oObject,oImg);
}
function closeById(id){
	if (document.all) {
			var oObject = document.all("div_" + id);
			var oImg = document.all('expand_' + id);		
		}	else {
			var oObject = document.getElementById("div_" + id);
			var oImg = document.getElementById('expand_' + id);
		}
		Close(oObject,oImg);
}

function OpenClose(id) {	
	//invert
	if (document.all) {
		var oObject = document.all("div_" + id);
		var oImg = document.all('expand_' + id);		
	}	else {
		var oObject = document.getElementById("div_" + id);
		var oImg = document.getElementById('expand_' + id);
	}
		
	if (oObject.style.display == 'none') {
		Open(oObject,oImg);
	} else {
		Close(oObject,oImg);
	}
}

function openAll() {
	for (i=1;i<22;i++){
		openById(i);
	}
}

function closeAll() {
	for (i=1;i<22;i++){
		closeById(i);
	}
}