search with javascript

Dear,
 

 
I need to search a text in a pdf file.
I have 2 text fields from who i get the values, after a cacul, need to search this value in my opened file.
  
I can not find the function or method to search the document that value.
 
The seach.query(); open's a new window. I need just tu search directly.
 
Thanks for you help
 
my PDF : http://www.allienys.com/sample/search.pdf
"test with 50 and 100 for 0.5"
  
Thanks