diff --git a/forms/TimeField.php b/forms/TimeField.php
index 4ac86de60..6a31db6a6 100644
--- a/forms/TimeField.php
+++ b/forms/TimeField.php
@@ -74,6 +74,7 @@ class TimeField extends TextField {
 	 */
 	protected function FieldDriver($html) {
 		if($this->getConfig('showdropdown')) {
+			Requirements::javascript(THIRDPARTY_DIR . '/behaviour/behaviour.js');
 			Requirements::javascript(SAPPHIRE_DIR . '/javascript/TimeField_dropdown.js');
 			Requirements::css(SAPPHIRE_DIR . '/css/TimeField_dropdown.css');
 			
diff --git a/javascript/TimeField_dropdown.js b/javascript/TimeField_dropdown.js
index 3d19d5ee2..5ea1794a8 100644
--- a/javascript/TimeField_dropdown.js
+++ b/javascript/TimeField_dropdown.js
@@ -4,11 +4,11 @@ TimeBehaviour = {
 	initialise : function () {
 		this.isOpen = false;
 		
-		this.icon = $( this.id + '-icon' );
+		this.icon = document.getElementById( this.id + '-icon' );
 		
 		this.icon.onclick = this.toggle.bind( this );
 		
-		this.dropdowntime = $( this.id + '-dropdowntime' );
+		this.dropdowntime = document.getElementById( this.id + '-dropdowntime' );
 		
 		var dropdown = 
 			'<select id="' + this.id + '-dropdowntime' + '-select' + '" size="18">' +
@@ -59,7 +59,7 @@ TimeBehaviour = {
 				 	
 		DropdownTime[ DropdownTime.length ] = this.dropdowntime;
 		
-		this.selectTag = $( this.id + '-dropdowntime' + '-select' );
+		this.selectTag = document.getElementById( this.id + '-dropdowntime' + '-select' );
 		
 		this.selectTag.onchange = this.updateValue.bind( this );
 	},