function toggle(id)
		{
		el = document.all ? document.all[id] : document.getElementById(id);
		if (el.style.display == "none")
		 {
		el.style.display = "block";
		  }
		else{
		  el.style.display = "none";
		  }
		}		
		function chgVisibility(id) {
		elVis = document.all ? document.all[id] : document.getElementById(id);
		if (elVis.style.visibility == "hidden") elVis.style.visibility = "visible";
		else elVis.style.visibility = "hidden";
		}