void showHideWindow() {
	foreach(GraphPage gp in Project.GraphPages) {
		gp.Show = false;		
	}
	foreach(LayoutPage lp in Project.LayoutPages) {
		lp.Show = false;		
	}
}

void showHideWindow() {
	Folder rootFld = Project.RootFolder;  // get the root folder
	loopAllFolders(rootFld);
}

// this function is used to hide all the graphs and layouts in the specified 
// folder, including subfolders, recursively
void loopAllFolders(Folder fld) {
	if(!fld)
		return;
	
	fld.Activate();  // activate the folder
	
	// hide graph and layout
	foreach(PageBase pb in fld.Pages) {
		int iType = pb.GetType();
		if(iType == EXIST_GRAPH || iType == EXIST_LAYOUT) {
			pb.Show = false;			
		}
	}
	
	// subfolders recursion
	foreach(Folder subFld in fld.Subfolders) {
		loopAllFolders(subFld);		
	}
}