min height for communication history and transaction history
diff --git a/erpnext/setup/doctype/contact_control/contact_control.js b/erpnext/setup/doctype/contact_control/contact_control.js
index bb505f6..1d17244 100755
--- a/erpnext/setup/doctype/contact_control/contact_control.js
+++ b/erpnext/setup/doctype/contact_control/contact_control.js
@@ -7,6 +7,9 @@
 cur_frm.cscript.make_hl_body = function(){
 	cur_frm.fields_dict['history_html'].wrapper.innerHTML = '';
 	cur_frm.history_html = $a(cur_frm.fields_dict['history_html'].wrapper,'div');
+	$(cur_frm.history_html).css({
+		'min-height': '320px',
+	});
 }
 
 // make history
diff --git a/erpnext/support/doctype/communication/communication.js b/erpnext/support/doctype/communication/communication.js
index 1a241bf..afa853d 100644
--- a/erpnext/support/doctype/communication/communication.js
+++ b/erpnext/support/doctype/communication/communication.js
@@ -16,6 +16,9 @@
 	var communication_wrapper = cur_frm.fields_dict.communication_html.wrapper;
 	communication_wrapper.innerHTML = '';
 	cur_frm.communication_html = $a(communication_wrapper, 'div');
+	$(cur_frm.communication_html).css({
+		'min-height': '275px',
+	});
 }
 
 cur_frm.cscript.render_communication_list = function(doc, dt, dn) {