public void insertAfter(int data,int curdata){
		Link lk=new Link();
		lk.data=data;
		Link curlk=findLink(curdata);
		
		if(curlk!=last){
			curlk.next.prior=lk;
			lk.next=curlk.next;
		}
		
		else
			last=curlk;
		
		lk.prior=curlk;
		curlk.next=lk;
	}