function bcheck ()
{
  if(navigator.userAgent.indexOf('IRIX') != -1){ var OpSys = "Irix"; }
  else if((navigator.userAgent.indexOf('Win') != -1) &&(navigator.userAgent.indexOf('95') != -1)){ var OpSys = "W"; }
  else if(navigator.userAgent.indexOf('Win') != -1){ var OpSys = "W"; }
  else if(navigator.userAgent.indexOf('Mac') != -1){ var OpSys = "Macintosh"; }
  else { var OpSys = "Other"; }

  bname=navigator.appName;
  bversion=navigator.appVersion;
  if (bname=="Netscape") {
    bplugins=navigator.plugins.length;
  }

  if (bname == 'Microsoft Internet Explorer' && OpSys == 'W') {
    document.all['SearchableText'].size = '15';
    document.all['SearchableText'].style.border = '0px';
    document.all['SearchableText'].style.height = '17px';
    document.all['SearchableText'].style.align = 'middle';
  } else if (bname == 'Netscape' && OpSys == 'W') {
    if (document.layers) {
      
    } else {
      document.sok.SearchableText.size = '20';
      document.sok.SearchableText.style.border = '0px';
      document.sok.SearchableText.style.height = '17px';
      document.sok.SearchableText.style.align = 'middle';
    }
  } else if (bname == 'Microsoft Internet Explorer' && OpSys == 'M')
  {
    document.sok.SearchableText.size = '20';
    document.all['SearchableText'].style.border = '0px';
  } else if (bname == 'Netscape' && OpSys == 'M') {
    document.sok.SearchableText.size = '12';
  }
}