function CheckDigitalCertificates(Certificate)
    {	
      	  
	  var CAPICOM_CHECK_ONLINE_ALL = 495;
	  var CAPICOM_CHECK_OFFLINE_ALL = 503;	  
	  
	  var CAPICOM_INFO_SUBJECT_SIMPLE_NAME = 0;
	  
	  var CAPICOM_TRUST_IS_NOT_TIME_VALID = 1;
      var CAPICOM_TRUST_IS_NOT_TIME_NESTED = 2;
      var CAPICOM_TRUST_IS_REVOKED = 4;
      var CAPICOM_TRUST_IS_NOT_SIGNATURE_VALID = 8;
      var CAPICOM_TRUST_IS_NOT_VALID_FOR_USAGE = 16;
      var CAPICOM_TRUST_IS_UNTRUSTED_ROOT = 32;
      var CAPICOM_TRUST_REVOCATION_STATUS_UNKNOWN = 64;
      var CAPICOM_TRUST_IS_CYCLIC = 128;
      var CAPICOM_TRUST_IS_PARTIAL_CHAIN = 65536;
      var CAPICOM_TRUST_CTL_IS_NOT_TIME_VALID = 131072;
      var CAPICOM_TRUST_CTL_IS_NOT_SIGNATURE_VALID = 262144;
      var CAPICOM_TRUST_CTL_IS_NOT_VALID_FOR_USAGE = 524288;      
	  
	  Certificate.IsValid().CheckFlag = CAPICOM_CHECK_ONLINE_ALL;
	  
	  var CertStat;
	  
	  if (Certificate.IsValid().Result == true)
      {           
		document.write("<div style = 'color : green'>The certificate is valid</div>");
      }
	  else
      {
        var Chain = new ActiveXObject("CAPICOM.Chain");
        Chain.Build(Certificate);
     
        if (CAPICOM_TRUST_IS_NOT_SIGNATURE_VALID & Chain.Status)
        {          
		  document.write("<div style = 'color : red'>The certificate or one of the certificates in the certificate chain does not have a valid signature</div>");
		  delete Chain;
          return false;
        }
        if ((CAPICOM_TRUST_IS_UNTRUSTED_ROOT & Chain.Status) || (CAPICOM_TRUST_IS_PARTIAL_CHAIN & Chain.Status))
        {          
		  document.write("<div style = 'color : red'>Unable to chain to a trusted authority</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_IS_CYCLIC & Chain.Status)
        {
          document.write("<div style = 'color : red'>One of the certificates in the chain was issued by a certification authority that the original certificate had certified</div>");
          delete Chain;
		  return false;
        }
        if (CAPICOM_TRUST_CTL_IS_NOT_TIME_VALID & Chain.Status)
        {
          document.write("<div style = 'color : red'>A CTL used to create this chain was not time valid</div>");
          delete Chain;
		  return false;
        }
        if (CAPICOM_TRUST_CTL_IS_NOT_SIGNATURE_VALID & Chain.Status)
        {
          document.write("<div style = 'color : red'>A CTL used to create this chain did not have a valid signature</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_CTL_IS_NOT_VALID_FOR_USAGE & Chain.Status)
        {
          document.write("<div style = 'color : red'>A CTL used to create this chain is not valid for this usage</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_IS_NOT_TIME_VALID & Chain.Status)
        {
          document.write("<div style = 'color : red'>This certificate or one of the certificates in the certificate chain is not time valid</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_IS_NOT_TIME_NESTED & Chain.Status)
        {
          document.write("<div style = 'color : red'>Certificates in the chain are not properly time nested</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_IS_NOT_VALID_FOR_USAGE & Chain.Status)
        {
          document.write("<div style = 'color : red'>The certificate or certificate chain is not valid for its proposed usage</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_IS_REVOKED & Chain.Status)
        {
          document.write("<div style = 'color : red'>Trust for this certificate or one of the certificates in the certificate chain has been revoked</div>");
		  delete Chain;
          return false;
        }
        if (CAPICOM_TRUST_REVOCATION_STATUS_UNKNOWN & Chain.Status)
        {
          document.write("<div style = 'color : red'>The revocation status of the certificate or one of the certificates in the certificate chain is unknown</div>");
		  delete Chain;
          return false;
        }
      }	     
    }