// JavaScript Document

function layershow(flag, maxl){
	maxl=maxl+1;
	for(i=1; i<maxl; i=i+1){
		var id = 'vef' + i;
		if (i==flag){
			document.getElementById(id).style.visibility = 'visible';}
		else{
			document.getElementById(id).style.visibility = 'hidden';}
	}
}