// Modified validate to strip hints
function Validate(id,confirmemail) {
  var f=document.getElementById(id);
  var Errors=new Array();
  var UnresolvedGroups=new Object();  //Eg 3 checkboxes where one must be filled. We don't know until the end that none were filled
  
  for (var i=0; i<f.length; i++) {
    if(f.elements[i].getAttribute('hint')) {
      if(f.elements[i].value==f.elements[i].title) {
        f.elements[i].value='';
      }
    }
    if (f.elements[i].getAttribute('validate')) {
      var Type=f.elements[i].type;
      if(f.elements[i].nodeName=="SELECT")
        Type="select";
      var Name=f.elements[i].name;
      var Title=f.elements[i].title;
      var Req=f.elements[i].getAttribute('validate');

      switch(Type) {
        case 'checkbox':
          var Value=(f.elements[i].checked) ? f.elements[i].value : '';
          break;
        case 'select':
          var Value=f.elements[i].options[f.elements[i].selectedIndex].value;
          break;
        default:
          var Value=f.elements[i].value;
          break;
      }

      if (Req=='group/required') {
        if (Value.length==0) {
          //Create an temporary error if we have not already seen this group
          if(typeof(UnresolvedGroups[Title])=='undefined') {
            UnresolvedGroups[Title]=(Type=="checkbox") ? "Please select a "+Title+"." : "Please fill in a "+Title+"." ;
          }
        }
        else {
          //False marks the group as resolved now
          UnresolvedGroups[Title]=false;
        }
      }
      
      if (Req=='required') {
        if (Value.length==0)
          Errors[Errors.length]="Please fill in the "+Title+".";
        else if ((Name=='contact_firstname' && Value=='First Name') || (Name=='contact_surname' && Value=='Surname'))
          Errors[Errors.length]="Please fill in the "+Title+".";
      }
      else if (Req=='email') {
        if (Value.indexOf('@')<1)
          Errors[Errors.length]="Please enter a valid email address for the "+Title+".";
      }
      else if (Req=='required-checked') {
        if (!f.elements[i].checked)
          Errors[Errors.length]="The "+Title+" checkbox must be checked before proceeding.";
      }
    }
    if(f.elements[i].getAttribute('hint')) {
      if(f.elements[i].value=='') {
        f.elements[i].value=f.elements[i].title;
      }
    }
  }
  if(confirmemail && (document.getElementById('email').value != document.getElementById('email_confirm').value)) {
    Errors[Errors.length]="Please ensure both email address fields match";
  }
  
  //Groups for which an error still stands
  for(Title in UnresolvedGroups) {
    if(UnresolvedGroups[Title]!=false)
      Errors[Errors.length]=UnresolvedGroups[Title];
  }
  
  if (Errors.length > 0) {
    var Intro='The following errors occurred while trying to submit the form. Please correct them and try again.';
    var Msg='';
    var FE=document.getElementById('FormErrors');
    if (FE) {
      Msg+='<p><strong>'+Intro+'</strong></p>\n<ul>\n';
      for (var i=0; i<Errors.length; i++)
        Msg+='<li>'+Errors[i]+'</li>\n';
      Msg+='</ul>\n';
      document.getElementById('FormErrors').style.display='block';
      document.getElementById('FormErrors').innerHTML=Msg;
      document.location.href="#FormErrors";
    }
    else {
      Msg+=Intro+'\n\n';
      
      //Avoid dupes
      var errorsSent=new Object;
      
      for (var i=0; i<Errors.length; i++) {
        if(typeof(errorsSent[Errors[i]])=='undefined') {
          errorsSent[Errors[i]]=1;
          Msg+=Errors[i]+'\n';
        }
      }
      
      alert(Msg);    
    }
    //showHints();
    if(typeof(window.event)!='undefined')
      window.event.returnValue = false;
    return false;
  }
  else
    return true;
}