X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax%2Fajax.js;h=b872481abf6046b90a2b86e3a3e30adf87cf39e2;hb=34c0bed54a5ad812b1f78a85529164e0085f50d7;hp=98f792a35ea36aea07639415f2cd9ebe1f77c403;hpb=8ac2169dc01f646b9182a03353427f2c48cba49c;p=jquery.git

diff --git a/src/ajax/ajax.js b/src/ajax/ajax.js
index 98f792a..b872481 100644
--- a/src/ajax/ajax.js
+++ b/src/ajax/ajax.js
@@ -55,7 +55,7 @@ jQuery.fn.extend({
 		// If the second parameter was provided
 		if ( params )
 			// If it's a function
-			if ( jQuery.isFunction( params.constructor ) ) {
+			if ( jQuery.isFunction( params ) ) {
 				// We assume that it's the callback
 				callback = params;
 				params = null;
@@ -132,7 +132,7 @@ jQuery.fn.extend({
 });
 
 // If IE is used, create a wrapper for the XMLHttpRequest object
-if ( jQuery.browser.msie && typeof XMLHttpRequest == "undefined" )
+if ( !window.XMLHttpRequest )
 	XMLHttpRequest = function(){
 		return new ActiveXObject("Microsoft.XMLHTTP");
 	};
@@ -799,7 +799,7 @@ jQuery.extend({
 			// Serialize the key/values
 			for ( var j in a )
 				// If the value is an array then the key names need to be repeated
-				if ( a[j].constructor == Array )
+				if ( a[j] && a[j].constructor == Array )
 					jQuery.each( a[j], function(){
 						s.push( encodeURIComponent(j) + "=" + encodeURIComponent( this ) );
 					});