Index: openacs-4/packages/acs-admin/www/apm/packages-install.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-admin/www/apm/packages-install.tcl,v
diff -u -r1.24.2.3 -r1.24.2.4
--- openacs-4/packages/acs-admin/www/apm/packages-install.tcl	9 Sep 2016 08:24:26 -0000	1.24.2.3
+++ openacs-4/packages/acs-admin/www/apm/packages-install.tcl	10 Sep 2016 11:53:38 -0000	1.24.2.4
@@ -104,16 +104,18 @@
     
     set formName "pkgsForm"
     template::add_body_script -script [subst {
-        document.getElementById('check_all').addEventListener('click', function () {
+        document.getElementById('check_all').addEventListener('click', function (event) {
             var install_form = document.getElementsByName('$formName')\[0\];
+            event.preventDefault();
             for (var i = 0; i < install_form.length; ++i) {
                 install_form.elements\[i\].checked = true;
                 //install_form.elements\[i\].href = '';
             }
             return false;            
         });
-        document.getElementById('uncheck_all').addEventListener('click', function () {
+        document.getElementById('uncheck_all').addEventListener('click', function (event) {
             var install_form = document.getElementsByName('$formName')\[0\];
+            event.preventDefault();
             for (var i = 0; i < install_form.length; ++i) {
                 install_form.elements\[i\].checked = false;
             }
Index: openacs-4/packages/acs-developer-support/lib/toolbar.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-developer-support/lib/toolbar.tcl,v
diff -u -r1.14.2.5 -r1.14.2.6
--- openacs-4/packages/acs-developer-support/lib/toolbar.tcl	9 Sep 2016 08:21:12 -0000	1.14.2.5
+++ openacs-4/packages/acs-developer-support/lib/toolbar.tcl	10 Sep 2016 11:53:38 -0000	1.14.2.6
@@ -48,8 +48,9 @@
         [ad_decode [ds_adp_reveal_enabled_p] 1 "on" "off"]
 
     template::add_body_script -script {
-        document.getElementById('ACS_DS_ADP').addEventListener('click', function () {
+        document.getElementById('ACS_DS_ADP').addEventListener('click', function (event) {
             var el=document.getElementsByTagName('span');
+            event.preventDefault();
             for(i=0;i<el.length;i++){if(el[i].className=='developer-support-adp-file-on'){void(el[i].className='developer-support-adp-file-off')}else{if(el[i].className=='developer-support-adp-file-off'){void(el[i].className='developer-support-adp-file-on')}}};void(el=document.getElementsByTagName('div'));for(i=0;i<el.length;i++){if(el[i].className=='developer-support-adp-box-on'){void(el[i].className='developer-support-adp-box-off')}else{if(el[i].className=='developer-support-adp-box-off'){void(el[i].className='developer-support-adp-box-on')}};if(el[i].className=='developer-support-adp-output-on'){void(el[i].className='developer-support-adp-output-off')}else{if(el[i].className=='developer-support-adp-output-off'){void(el[i].className='developer-support-adp-output-on')}};}
         });
     }
@@ -60,8 +61,9 @@
         off
 
     template::add_body_script -script {
-        document.getElementById('ACS_DS_FOT').addEventListener('click', function () {
+        document.getElementById('ACS_DS_FOT').addEventListener('click', function (event) {
             var el=document.getElementsByTagName('div');
+            event.preventDefault();
             for(i=0;i<el.length;i++){if(el[i].className=='developer-support-footer'){void(el[i].className='developer-support-footer-off')}else{if(el[i].className=='developer-support-footer-off'){void(el[i].className='developer-support-footer')}}};
         });
     }
Index: openacs-4/packages/dotlrn/www/admin/term-new.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn/www/admin/term-new.tcl,v
diff -u -r1.13.10.2 -r1.13.10.3
--- openacs-4/packages/dotlrn/www/admin/term-new.tcl	9 Sep 2016 08:18:07 -0000	1.13.10.2
+++ openacs-4/packages/dotlrn/www/admin/term-new.tcl	10 Sep 2016 11:53:38 -0000	1.13.10.3
@@ -52,10 +52,12 @@
 
 } -on_request {
     template::add_body_script -script [subst {
-        document.getElementById('start_date').addEventListener('click', function () {
+        document.getElementById('start_date').addEventListener('click', function (event) {
+            event.preventDefault();
             showCalendar('start_date', 'yyyy-mm-dd');
         });
-        document.getElementById('end_date').addEventListener('click', function () {
+        document.getElementById('end_date').addEventListener('click', function (event) {
+            event.preventDefault();
             showCalendar('end_date', 'yyyy-mm-dd');
         });
     }]