@FXML public void handleAddToCenter(MouseEvent e) throws Exception{
		String resourceURL = null ;
		ImageView ev = (ImageView)e.getSource() ;
		
		if(ev.getId().equals("departmentImageView")){
			resourceURL = "/application/department/addDepartmentDocument.fxml" ;
		}else if(ev.getId().equals("teacherImageView")){
			resourceURL = "/application/etacher/addTeacherDocument.fxml" ;
		}else if(ev.getId().equals("roomImageView")){
			resourceURL = "/application/room/addRoomDocument.fxml" ;
		}else if(ev.getId().equals("courseImageView")){
			resourceURL = "/application/course/addCourseDocument.fxml" ;
		}else if(ev.getId().equals("yearImageView")){
			resourceURL = "/application/year/addYearDocument.fxml" ;
		}else if(ev.getId().equals("sectionImageView")){
			resourceURL = "/application/year/addSectionDocument.fxml" ;
		}else if(ev.getId().equals("subjectImageView")){
			resourceURL = "/application/subject/addSubjectDocument.fxml" ;
		}
		
		Pane child = FXMLLoader.load(getClass().getResource(resourceURL)) ;
		
		Adder.addToCenter(workplacePane , child);
		
		animation = new ScaleAnimation(scaleProperty);
		animation.animate(child);
	}