php - Passing an http query string with jquery -

I'm trying to load a div. Load () I have tried:

  function newPage (p_id) {var id = p_id; $ ("# Div") load ("content.php id = id?") .; }   
 Now the value of the php id does not get, but the string is getting the "id" value. Then I tried:  
  function newPage (p_id) {var id = p_id; Switch (id) {case 1: $ ("# div"). Load ("content.php? Id = 1"); break; Case 2: $ ("# div") Load ("content.php? Id = 1"); break; Default: Alert ("default"); break; }}   
 In this case the default is executed, even if the value of the ID is 1 or 2.  
 Where am I going?   
 
 
 You need it -  
  $ ("# div" ). Load ("content? Php id =" + id);