function getNextLevel(rowNum){
	document.getElementById(rowNum + "Icon").src="/icons/collapse.gif";
	document.getElementById(rowNum + "Child").style.display="block";
	document.getElementById(rowNum).onclick = closeRow;
}

function closeRow(){
	var divNum = this.id;
	document.getElementById(divNum + "Icon").src="/icons/expand.gif";	
	document.getElementById(divNum).onclick = openRow;
	document.getElementById(divNum + "Child").style.display = "none";
}

function openRow(){
	getNextLevel(this.id);
}