removeChildren(container); 
container.empty(); 
function addGroupsTree(groups, id, noGroupsMessage, selectedGroups, styleClass) {	prepareDwr(GroupService, getDefaultDwrPath());	//	Restoring DWR	if (groups.length == 0) {		var container = document.getElementById(id);		if (container != null) {			removeChildren(container);			var textContainer = new Element('div');			textContainer.appendText(noGroupsMessage);			textContainer.injectInside(container);		}	}	else {		setGroupsNodes(groups, id, styleClass, selectedGroups);		registerGroupInfoChooserActions(null, noGroupsMessage, selectedGroups, styleClass);	}}
6849	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6849/f3a5cd8bcb8f556375ab8bfbf7d28f52a4e772ba/GroupHelper.js/buggy/resources/javascript/GroupHelper.js