var siznax = {

    showHide: function(e_id,btn_id) {
	e   = document.getElementById(e_id);
	btn = document.getElementById(btn_id);
	if (e.style.display=='none') { 
	    e.style.display='block'; 
            btn.innerHTML = this.showLessLink(e_id,btn_id);
	} else { 
	    e.style.display='none';
            btn.innerHTML = this.showMoreLink(e_id,btn_id);
	}
    },

    showMoreLink: function(e_id,btn_id) {
	return "[<a href=\"#\" onclick=\"siznax.showHide('" 
          + e_id + "','" + btn_id 
          + "'); return false;\">+</a>]";
    },

    showLessLink: function(e_id,btn_id) {
	return "[<a href=\"#\" onclick=\"siznax.showHide('" 
          + e_id + "','" + btn_id 
          + "'); return false;\">&ndash;</a>]";
    },


}