function openLayer(id){
	if (document.all) { 
	document.all[id].style.display = "";
	document.all[id].style.position = "relative";
	} 
	if(document.layers) { 
	document.layers[id].style.display = "" ;
	document.layers[id].style.position = "relative";
	} 
	if(document.getElementById(id) != null) {
	document.getElementById(id).style.display = "";
	document.getElementById(id).style.position = "relative";
	} 
} 
function closeLayer(id) { 
	if (document.all) { 
	document.all[id].style.display = "none";
	document.all[id].style.position = "absolute";
	} 
	if(document.layers){ 
	document.layers[id].style.display = "none" ;
	document.layers[id].style.position = "absolute";
	} 
	if(document.getElementById(id) != null) {
	document.getElementById(id).style.display = "none";
	document.getElementById(id).style.position='absolute';
	} 
}
function showLayer(id){
	if (document.all) { 
	document.all[id].style.visibility = "visible";
	document.all[id].style.position = "relative";
	} 
	if(document.layers) { 
	document.layers[id].style.visibility = "show";
	document.layers[id].style.position = "relative";
	} 
	if(document.getElementById(id) != null) {
	document.getElementById(id).style.visibility="visible";
	document.getElementById(id).style.position = "relative";
	} 
} 
function hideLayer(id) { 
	if (document.all) { 
	document.all[id].style.visibility = "hidden";
	document.all[id].style.position = "absolute";
	} 
	if(document.layers){ 
	document.layers[id].style.visibility = "hide";
	document.layers[id].style.position = "absolute";
	} 
	if(document.getElementById(id) != null) {
	document.getElementById(id).style.visibility="hidden";
	document.getElementById(id).style.position='absolute';
	} 
}