Core: Minor cleanup.

Author: scottgonzalez

ui/jquery.ui.core.js

@@ -105,8 +105,8 @@ $.fn.extend({
 					// other browsers return a string
 					// we ignore the case of nested elements with an explicit value of 0
 					// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
-					value = parseInt( elem.css( "zIndex" ) );
-					if ( !isNaN( value ) && value != 0 ) {
+					value = parseInt( elem.css( "zIndex" ), 10 );
+					if ( !isNaN( value ) && value !== 0 ) {
 						return value;
 					}
 				}
@@ -116,9 +116,9 @@ $.fn.extend({
 
 		return 0;
 	},
-	
+
 	disableSelection: function() {
-		return this.bind( $.support.selectstart ? "selectstart" : "mousedown" +
+		return this.bind( ( $.support.selectstart ? "selectstart" : "mousedown" ) +
 			".ui-disableSelection", function( event ) {
 				event.preventDefault();
 			});