1 files changed, 27 insertions, 0 deletions
diff --git a/src/css/swap.js b/src/css/swap.js
new file mode 100644
index 000000000..07a661c03
--- /dev/null
+++ b/src/css/swap.js
@@ -0,0 +1,27 @@
+define([
+	"../core"
+], function( jQuery ) {
+
+	// A method for quickly swapping in/out CSS properties to get correct calculations.
+	jQuery.swap = function( elem, options, callback, args ) {
+		var ret, name,
+			old = {};
+
+		// Remember the old values, and insert the new ones
+		for ( name in options ) {
+			old[ name ] = elem.style[ name ];
+			elem.style[ name ] = options[ name ];
+		}
+
+		ret = callback.apply( elem, args || [] );
+
+		// Revert the old values
+		for ( name in options ) {
+			elem.style[ name ] = old[ name ];
+		}
+
+		return ret;
+	};
+
+	return jQuery.swap;
+});