if ( ! versions_loaded ) {

    var bV   = parseInt( navigator.appVersion );
    var NS4  = (document.layers)         ? true : false;
    var NS3  = (document.images)         ? true : false;
    var IE4  = ((document.all)&&(bV>=4)) ? true : false;
    var ver4 = (NS4 || IE4)              ? true : false;

    var MAC   = (navigator.userAgent.indexOf("Mac")      != -1) ? true : false;
    var Opera = (navigator.userAgent.indexOf("Opera")    != -1) ? true : false;
    var IE5   = (navigator.userAgent.indexOf("MSIE 5.0") != -1) ? true : false;
	
	var NS6 = (document.getElementById && !document.all) ? true : false;
	
    var versions_loaded = true;
}

function getLayer( name ) {
    var obj = null;
    if ( IE4 ) {
	obj = document.all[name];
    } else if ( NS4 ) {
	obj = document.layers[name];
    } else if ( NS6 ) {
	obj = document.getElementById(name)
	}
    return( obj );
}

function hideLayer( obj ) {
    if ( IE4 || NS6 )
	obj.style.visibility = "hidden";
    else if ( NS4 )
	obj.visibility = "hide";
}

function showLayer( obj ) {
    if ( IE4 || NS6 ) {
	obj.style.visibility = "visible";
    } else if ( NS4 ) {
	obj.visibility = "show";
    }
}

function SetFocus()
{
	if(document.logform)
	{
		if(document.logform.username){document.logform.username.focus();}
		else if(document.logform.password){document.logform.password.focus();}	
	}
}