var ie4=document.all && !document.getElementById;
if(ie4) {

document.getElementById = new Function('var expr = /^\\w[\\w\\d]*$/, elname=arguments[0]; if(!expr.test(elname)) { return null; } else if(eval("document.all."+elname)) { return eval("document.all."+elname); } else return null;')
}

function show(object) {
if (document.getElementById && document.getElementById(object) != null)
node = document.getElementById(object).style.visibility='visible';
else if (document.layers && document.layers[object] != null)
document.layers[object].visibility = 'visible';
else if (document.all)
document.getElementById(object).style.visibility = 'visible';
}

function hide(object) {
if (document.getElementById && document.getElementById(object) != null)
node = document.getElementById(object).style.visibility='hidden';
else if (document.layers && document.layers[object] != null)
document.layers[object].visibility = 'hidden';
else if (document.all)
document.getElementById(object).style.visibility = 'hidden';
}