Insure width/height do not return a negative number.

diff --git a/src/core.js b/src/core.js
index ad938f2..33e109b 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -798,7 +798,7 @@ jQuery.extend({
                        else
                                jQuery.swap( elem, props, getWH );
                        
-                       return val;
+                       return Math.max(0, val);
                }
                
                return jQuery.curCSS( elem, name, force );