public Node findDelNode(int delKey){
		current=root;				// to keep track of current node
		parent=root;				// to keep track of parent of current node
		while(current.getKey()!=delKey){	//go through tree and search to equal names(using key that generate from title)
			parent=current;
			if(delKey<current.getKey()){	//go to left subtree
				isLeftch=true;
				current=current.leftChld;
			}else{							//or go to right sub tree
				isLeftch=false;
				current=current.rightChld;
			}
			if(current==null){				//if didn't find
				return null;		
			}				
		}			//end of while
		return current;
	}