function DispSubMenu(id){

if(document.getElementById){

	if(document.getElementById(id).style.display == "none"){
		document.getElementById(id).style.display = "block";
	} else { 
		document.getElementById(id).style.display = "none";
	}
}
else if(document.all){
	if(document.all(id).style.display == "none"){
		document.all(id).style.display = "block";
	} else {
		document.all(id).style.display = "none";
	}
}
else if(document.layers){
	if(document.layers(id).style.display == "none"){
		document.layers(id).style.display = "block";
	} else {
		document.layers(id).style.display = "none";
	}
}

}