function onDeleteGrouping() {
	hideAllForms()
	showElement("groupeditform");
	deleteGrouping();
	return false;
}


/*
 * Deletes the selected grouping
 */
function deleteGrouping() {
 	//alert("Called deleteGrouping");
 	var url = "deletegrouping-xml.php";
    var requeststring = "groupingid="+selectedgroupingid;
    confirm('Are you sure you want to delete this grouping and the groups that it contains?');
    sendPostRequest(request, url, requeststring, deleteGroupingResponse);
 }
 
 /**
 * The callback for the response to the request sent in deleteGrouping() 
 */
 function deleteGroupingResponse() {
    if (checkAjaxResponse(request)) {
    	//alert("deleteGroupingResponse called");
      	//alert(request.responseText);
      	error = getFromXML(request.responseXML, 'error');
      	if (error != null) {
      		alert(error);	
      	}          	
      	selectedgroupingid = null;
      	selectedgroupid = null;
      	updateGroupings();
    }
}