Jon and Kate Battle Over Twins' Birthday
 				 By Michael Y. Park
  Originally posted Wednesday October 07, 2009 03:30 PM EDT
 
 			 				Jon and Kate Gosselin
		
		
	
	
  Amid all the drama surrounding her crumbling marriage, 
Kate Gosselin has had one bright spot on the horizon. "Thursday is Cara and Madys 9th birthday," Kate, 34, tells PEOPLE, referring to her twins. "That's my focus to get me through the next few days. I'm going to bake a chocolate cake from scratch, and that's going to feel normal and happy." 
Now, however, Kate's dreams of a happy birthday for her oldest children seem in doubt. On Wednesday, Jon told 
ET Online that Kate is trying to change their joint-custody arrangement so that he is only at their Pennsylvania home from 4 p.m. to 6 p.m. on Thursday, as well as altering their agreement for the weekend  a move Jon claims his tantamount to barring him from the birthday festivities altogether. 
"She's trying to prevent me from seeing my kids on Mady and Cara's birthday," he says. "That's like giving her full custody by obeying her. She can't tell me what to do. I'm not going to allow it. I'm just going to stay. I own the house so I can do what I want." 
"She's trying to prevent me from seeing my kids on their birthday because she doesn't want to see me," he says. 
"She doesn't want to hear my apology. She doesnt want to work things out." 
More to come ...
What is the apology about now?