var Browser = {
  Version: function() {
    var version = 999; // we assume a sane browser
    if (navigator.appVersion.indexOf("MSIE") != -1)
      version = parseFloat(navigator.appVersion.split("MSIE")[1]);
    return version;
  },
  Name: function(){
	return navigator.appName;
  }
}
if (Browser.Version() <= 7){
	document.write('<link rel="stylesheet" href="searchBoxPosIE7.css" type="text/css">')
}
else if (Browser.Version() >= 8 || Browser.Name() =="Netscape"){
    document.write('<link rel="stylesheet" href="searchBoxPosIE.css" type="text/css">')
}
else{
    document.write('<link rel="stylesheet" href="searchBoxPosChrome.css" type="text/css">')
};