function showit(nom) {

    var __obj;
    if (document.getElementById)
        __obj=document.getElementById(nom).style;
    else if (document.layers)
        __obj=document.layers[nom];
    else if (document.all)
        __obj=document.all[nom].style;
    if (__obj)
        __obj.visibility="inherit";
}

function hideit(nom) {
	
    var __obj;
    if (document.getElementById)
        __obj=document.getElementById(nom).style;
    else if (document.layers)
        __obj=document.layers[nom];
    else if (document.all)
        __obj=document.all[nom].style;
    if (__obj)
        __obj.visibility="hidden";
}