var dom = fw.getDocumentDOM(); // document object
var sel = new Array().concat(fw.selection); // saved selection

function AddToGroup() {
	if(!sel.length) return false;
	
	// find selected group(s) and regular elements
	var groups = [], elements = [];
	for(var s in sel){
		if(String(sel[s])=='[object Group]'){
			groups.push(sel[s]);
		}else{
			elements.push(sel[s]);
		}
	}
	if(!groups.length) {
		alert('Select at least one group to add into.');
		return false;
	}
	
	// the elements to merge into the top selected group, includes any other groups
	var merge = elements.concat(groups.slice(1));
	
	// select and temporarily group the merge elements
	fw.selection = merge;
	dom.group();
	fw.selection[0].name = 'AddToGroup_temporaryMergeGroup';
	// cut merge elements
	dom.clipCut();
	// select element in target group, ready to paste into
	fw.selection = [groups[0].elements[0]];
	// temporarily group it to protect it in case it has a mask, since we will use PasteAsMask
	dom.group();
	fw.selection[0].name = 'PasteInGroup_temporaryMaskGroup';
	// here is the main event: PasteAsMask gets the old elements into the group
	dom.clipPasteAsMask("ask user", "vector", "add");
	// now ungroup the Mask group
	dom.ungroup();
	// find the temporary groups and ungroup them
	fw.selection = dom.findNamedElements('PasteInGroup_temporaryMaskGroup');
	dom.ungroup();
	fw.selection = dom.findNamedElements('AddToGroup_temporaryMergeGroup');
	dom.ungroup();
	// select the parent group and we are done
	dom.selectParents();
	return true;
}

AddToGroup();