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diff --git a/src/jquery/jquery.js b/src/jquery/jquery.js
index 74b912e..e81b82b 100644
--- a/src/jquery/jquery.js
+++ b/src/jquery/jquery.js
@@ -932,10 +932,6 @@ jQuery.fn = jQuery.prototype = {
 	 * Please note: the expression cannot use a reference to the
 	 * element name. See the two examples below.
 	 *
-	 * This will not work: $(".res img").not("img[@src$=on]")
-	 *
-	 * This will: $(".res img").not("[@src$=on]"); // also could be written $(".res img:not([@src$=on])")
-	 *
 	 * @example $("p").not( $("div p.selected") )
 	 * @before <div><p>Hello</p><p class="selected">Hello Again</p></div>
 	 * @result [ <p>Hello</p> ]
@@ -1259,7 +1255,7 @@ jQuery.extend({
 	// is the only cross-browser way to do this. --John
 	isFunction: function( fn ) {
 		return !!fn && typeof fn != "string" && !fn.nodeName && 
-			typeof fn[0] == "undefined" && /function/i.test( fn + "" );
+			fn.constructor != Array && /function/i.test( fn + "" );
 	},
 	
 	// check if an element is in a XML document
@@ -1476,7 +1472,7 @@ jQuery.extend({
 					[0,"",""];
 
 				// Go to html and back, then peel off extra wrappers
-				div.innerHTML = wrap[1] + s + wrap[2];
+				div.innerHTML = wrap[1] + arg + wrap[2];
 				
 				// Move to the right depth
 				while ( wrap[0]-- )
@@ -1499,7 +1495,7 @@ jQuery.extend({
 					
 				}
 				
-				arg = div.childNodes;
+				arg = jQuery.makeArray( div.childNodes );
 			}
 
 			if ( arg.length === 0 && !jQuery.nodeName(arg, "form") )