var ns4 = document.layers  
var ie4 = document.all  
var ns6 = document.getElementById &&! document.all  

function inicia(crossobj){
	ocultar(crossobj);
}

function mostrar(crossobj) {
	if ( ie4 || ns6)
		crossobj.style.visibility = "visible"
	else if ( ns4 )
		crossobj.visibility = "show"
}

function ocultar(crossobj) {
	if ( ie4 || ns6 )
		crossobj.style.visibility = "hidden";
	else if (ns4)
		crossobj.visibility = "hide";
		
    crossobj.innerHTML = "";
}