// JavaScript Document

function add_query_string(link_id)
{
	if ( location.search!='' && document.getElementById(link_id) ) 
		{
			document.getElementById(link_id).href = document.getElementById(link_id).href + location.search;			
		}
}

function hidden_change_state(id)
{
	if ( hidden_el = document.getElementById(id))
	{
		hidden_el . value = hidden_el . value == 1 ? 0 : 1 ;
	}
}