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@@ -113,13 +113,6 @@ jQuery.extend({
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       dataType: type
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     });
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   },
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-	
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-	// Create the request object; Microsoft failed to properly
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-	// implement the XMLHttpRequest in IE7, so we use the ActiveXObject when it is available
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-	getAjaxTransport : function() {
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-		return window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
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-	},
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-
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   getScript: function( url, callback ) {
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     return jQuery.get(url, null, callback, "script");
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@@ -159,6 +152,12 @@ jQuery.extend({
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     data: null,
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     username: null,
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     password: null,
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+		// Create the request object; Microsoft failed to properly
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+		// implement the XMLHttpRequest in IE7, so we use the ActiveXObject when it is available
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+		// This function can be overriden by calling jQuery.ajaxSetup
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+		xhr:function(){
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+			return window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
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+		},
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     accepts: {
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       xml: "application/xml, text/xml",
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       html: "text/html",
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@@ -282,7 +281,7 @@ jQuery.extend({
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     var requestDone = false;
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     // Create the request object
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-		var xhr = jQuery.getAjaxTransport();
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+		var xhr = s.xhr();
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     // Open the socket
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     // Passing null username, generates a login popup on Opera (#2865)