Expected identifier, string or number IE problem

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Javascript

Ajax

jQuery

Hi guys... i was wondering if you can help me with my problem... i have a jquery code that request for a certain page using ajax... now its working on firefox and other browser except IE... i keep on getting this error "Expected identifier, string or number"... i dont know whats the problem with this... it keeps on pointing to this line of code

$("#add_ads").click(function(){
	var urls= "../includes/add_ads.php";
	var request= "POST";
	$.ajax({
	  type: request + "",
	  url: urls + "",					
	  dataType: "html",
	  data: {
	    "page": $("#page_name").val() + "",
		   "action": "new"
		},
								
	  success: function(response){				    
             $.facebox(response);		
	  }
        });
      return false;
    });

i dont know where is the problem in my code i already tried the

type: request + "",

to

type: "POST",

and the

url: urls + "",

to

url: "../includes/add_ads.php",

i really dont know how to solve this now.. please help guys