Something

<script type="text/javascript"><!--
// near top of page
function set_menus(){
	alert( 'Why?' );
	var sec_menu = document.getElementById( 'secondary' );
	for ( i = 0; i < sec_menu.options.length; i++ ) {
		if ( sec_menu.options[i].text == '(% secondary_selected %)' ){
			sec_menu.options.selectedIndex = i;
			secondary_changed();
		}
	}
	alert( 'Why?!' );
	var ter_menu = document.getElementById( 'tertiary' );
	for ( i = 0; i < ter_menu.options.length; i++ ) {
		if ( ter_menu.options[i].text == '(% tertiary_selected %)' ){
			ter_menu.options.selectedIndex = i;
		}
	}
}
// -->
</script>


<script type="text/javascript"><!--
// near end of page
function init(){
	primary_changed();
	set_menus();
}
window.onload = init();
// -->
</script>