Patch for jQuery ticket #1954 (reading only)

ie7-button-value-minimal.patch

diff --git a/src/attributes.js b/src/attributes.js
index 5997210..1d1fcf8 100644
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -211,6 +211,10 @@ jQuery.fn.extend({
 					return elem.getAttribute("value") === null ? "on" : elem.value;
 				}
 
+				if ( jQuery.nodeName( elem, "button" ) ) {
+					return elem.getAttributeNode( "value" ) ? elem.getAttributeNode( "value" ).nodeValue : "";
+				}
+
 				// Everything else, we just grab the value
 				return (elem.value || "").replace(rreturn, "");
 
@@ -336,6 +340,10 @@ jQuery.extend({
 					return elem.getAttributeNode( name ).nodeValue;
 				}
 
+				if ( name === "value" && jQuery.nodeName( elem, "button" ) ) {
+					return elem.getAttributeNode( name ) ? elem.getAttributeNode( name ).nodeValue : "";
+				}
+
 				// elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
 				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
 				if ( name === "tabIndex" ) {