function CheckValidAdv()
{
  var iserr=false;
        if(Trim(document.getElementById('bname').value)=="")
        {
                document.getElementById('bname').className = 'input-red';
                document.getElementById('show_bname').style.display = '';
                document.formAdvert.bname.value = '';
                if(!iserr)iserr=true;
        }
        else
        {
                document.getElementById('show_bname').style.display = 'none';
        }

        if(Trim(document.getElementById('yname').value)=="")
        {
                document.getElementById('yname').className = 'input-red';
                document.getElementById('show_yname').style.display = '';
                document.formAdvert.yname.value = '';
                if(!iserr)iserr=true;
        }
        else
        {
                document.getElementById('show_yname').style.display = 'none';
        }
        
        if(Trim(document.getElementById('email').value)=="")
        {
                document.getElementById('show_email').style.display = '';
                document.getElementById('show_validemail').style.display = 'none';
                document.getElementById('email').className = 'input-red';
                document.formAdvert.email.value = '';
                if(!iserr)iserr=true;
        }
        else
        {
                document.getElementById('show_email').style.display = 'none';
        }
        if(document.formAdvert.email.value != '')
        {
                if(!isValidEmail_withoutalert(document.getElementById('email').value))
                {
                        document.getElementById('show_email').style.display = 'none';
                        document.getElementById('show_validemail').style.display = '';
                        document.getElementById('email').className = 'input-red';
                        if(!iserr)iserr=true;
                }
                else
                {
                        document.getElementById('show_validemail').style.display = 'none';
                }
        }
        if(Trim(document.getElementById('website').value)=="")
        {
                document.getElementById('website').className = 'input-red';
                document.getElementById('show_website').style.display = '';
                document.formAdvert.website.value = '';
                if(!iserr)iserr=true;
        }
        else
        {
                document.getElementById('show_website').style.display = 'none';
        }
        if(Trim(document.getElementById('comments').value)=="")
        {
                document.getElementById('comments').className = 'input-red';
                document.getElementById('show_advertise').style.display = '';
                document.formAdvert.comments.value = '';
                if(!iserr)iserr=true;
        }
        else
        {
                document.getElementById('show_advertise').style.display = 'none';
        }
        if(document.getElementById('vCode'))
          {
               if(Trim(document.getElementById('vCode').value) == "")
               {
                    document.getElementById('err_code').style.display = '';
                    document.getElementById('vCode').className = 'input-red';
                    if(!iserr)iserr=true;
               }
               else
               {
                    document.getElementById('err_code').style.display = 'none';
               }
          }
        
  if(iserr)
      return false;
  else
      return true;
}