Empt=new Array(0,0,0,0,0,0,0);
var pcpos;
var geldig = true;
FieldName=new Array("Uw naam","E-mail adres","Telefoon","Uw bericht")

function ValidForm(){

if(document.getElementById('naam').value.length<2)             Empt[0]=1
if(!checkMail(document.getElementById('email').value))         Empt[1]=1 
if(document.getElementById('Telefoon').value.length<10)        Empt[2]=1
if(document.getElementById('berichttekst').value.length<4)    Empt[3]=1

  inv=0
  for(x=0;x<4;x++) {
    if(Empt[x]==1) inv=1
    }
	(inv==0)	?	disable()	:	InVald()
}
	
function InVald(){
	cntnt="Oops.. U heeft 1 of meerdere velden niet volledig ingevuld:\n\n"
  	for(k=0;k<4;k++){
      if(Empt[k]==1)cntnt+="* "+FieldName[k]+"\n"
      Empt[k]=0
    }
  cntnt+="\nKlik OK om door te gaan."
  alert(cntnt)
  return
}

function checkMail(formelement){
  var syntaxvalid= false	
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,6})+$/;
	if (filter.test(formelement)) syntaxvalid = true;
	return syntaxvalid
}

function disable(){
  document.getElementById('verzend1').value="bezig met verzenden... momentje graag";
	document.getElementById('verzend1').disabled=true;
	//DoAjax("frmContact","lib/postbode_contact.php","ajaxcontainer","post");
	document.frmContact.method='post'
	document.frmContact.action='http://www.amsterdamevents.nl/lib/global_form_advies.php';
	document.frmContact.submit();
}