var ns4 = (navigator.appName.indexOf("Netscape")>=0 && !document.getElementById)? true : false;
var ie4 = (document.all)? true:false
var ie5 = (document.getElementById && document.all)? true : false;
var ns6 = (document.getElementById && navigator.appName.indexOf("Netscape")>=0 )? true: false;
function gotothenibz(id) { if (ns4) document.layers[id].visibility = 'hide'; else if (ie4) { document.all[id].style.visibility = 'hidden';} else if (ns6 ) { document.getElementById(id).style.visibility = 'hidden';}}
function vroum(id) { if (ns4) {document.layers[id].visibility = 'show';} else if (ie4 ) {document.all[id].style.visibility = 'visible';} else if (ns6 ) {document.getElementById(id).style.visibility = 'visible';}}
function logiscom_menu(id) {for (var i=1;i<=4;gotothenibz('m'+(i++)));vroum(id);}