var browser;

if ( navigator.appVersion.indexOf( "Win" ) > -1 && navigator.appName.indexOf( "Explorer" ) > -1 )
{
	browser = 1;
	document.write( "<link rel='stylesheet' href='css/vis_ie.css'>" );
}

if ( navigator.appVersion.indexOf( "Win" ) > -1 && navigator.appName.indexOf( "Netscape" ) > -1 )
{
	browser = 2;
	document.write( "<link rel='stylesheet' href='css/vis_ns.css'>" );
}

if ( navigator.appVersion.indexOf( "Macintosh" ) > -1 && navigator.appName.indexOf( "Explorer" ) > -1 )
{
	browser = 3;
	document.write( "<link rel='stylesheet' href='css/vis_mie.css'>" );
}

if ( navigator.appVersion.indexOf( "Macintosh" ) > -1 && navigator.appName.indexOf( "Netscape" ) > -1 )
{
	browser = 4;
	document.write( "<link rel='stylesheet' href='css/vis_mns.css'>" );
}

if ( navigator.appVersion.indexOf( "Win" ) > -1 && navigator.userAgent.indexOf( "IE 5.0" ) > -1 )
{
	browser = 5;
	document.write( "<link rel='stylesheet' href='css/vis_ie5.css'>" );
}

if ( navigator.appVersion.indexOf( "Macintosh" ) > -1 && navigator.appName.indexOf( "MIE 4.5" ) > -1 )
{
	browser = 6;
	document.write( "<link rel='stylesheet' href='css/vis_mie4.css'>" );
}

else
{
    browser = 7;
	document.write( "<link rel='stylesheet' href='css/vis.css'>" );
}