var ns4 = (document.layers)? 1 : 0;
var ie = (document.all)? 1 : 0;
var usr = navigator.userAgent;
var objns6 = ( usr.indexOf( 'Gecko' ) != -1 ) ? 1 : 0;
var ns6 = ( ( document.getElementById ) && ( objns6 ) ) ? 1 : 0;
var isMac = ( navigator.userAgent.indexOf( 'Mac' ) != -1 );
var brsr = ( navigator.appName.indexOf( "Netscape" ) != -1 );
function client_width() {
	var	w;
	if ( typeof( window.innerWidth ) == 'number' )
		w = window.innerWidth;
	else {
		if ( document.documentElement && document.documentElement.clientWidth ) 
			w = document.documentElement.clientWidth;
		else
			if ( document.body && document.body.clientWidth )
				w = document.body.clientWidth;
	}
	return w;
}
function client_height() {
	var	h;
	if ( typeof( window.innerHeight ) == 'number' )
		h = window.innerHeight;
	else {
		if ( document.documentElement && document.documentElement.clientHeight ) 
			h = document.documentElement.clientHeight;
		else
			if ( document.body && document.body.clientHeight )
				h = document.body.clientHeight;
	}
	return h;
}