TAPESTRY-238: Add call to onchange for DatePicker


git-svn-id: https://svn.apache.org/repos/asf/jakarta/tapestry/branches/branch-3-0@244035 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/framework/src/org/apache/tapestry/form/DatePicker.script b/framework/src/org/apache/tapestry/form/DatePicker.script
index c02820a..e250b9e 100644
--- a/framework/src/org/apache/tapestry/form/DatePicker.script
+++ b/framework/src/org/apache/tapestry/form/DatePicker.script
@@ -54,6 +54,7 @@
 
 ${calendarObject}.onchange = function() {
 	document.${formName}.${name}.value  = ${calendarObject}.formatDate();
+	document.${formName}.${name}.onchange();
 }
 
 </initialization>