menu_status = new Array();

function showHide(theid)
{
    if (document.getElementById) 
    {
    	var switch_id = document.getElementById(theid);

        if(menu_status[theid] != 'show') 
        {
           switch_id.className = 'show';
           menu_status[theid] = 'show';
        }
        else
        {
           switch_id.className = 'hide';
           menu_status[theid] = 'hide';
        }
    }
}