var browser     = '';
var version     = 0;
var entrance    = '';
var cond        = '';
var whole_version = '0';
// OLD IE BROWSER?
if (navigator.appName.indexOf('Microsoft') != -1)
  browser = 'IE'
version= navigator.appVersion;
msie = version.indexOf('MSIE');
if (msie > 0) 
whole_version = navigator.appVersion.substring(msie+5,msie+8);
else {
  paren = version.indexOf('(');
  whole_version = navigator.appVersion.substring(0,paren-1);
}
version = parseInt(whole_version);

if (browser == 'IE' && version <= 5) 
  document.write('<'+'link rel="stylesheet" href="css/stylesheetie5.css" type="text/css" media="all" />');
else {
  document.write('<'+'link rel="stylesheet" href="css/stylesheet.css" type="text/css" media="all" />');
  document.write('<style type="text/css"/> body{behavior:url("css/csshover.htc");} </style>');
}