function controleerGegevensForm(formulier)
{
   var melding = "";

   if(formulier.Bedrijfsnaam.value == "")
   {
       document.getElementById("Bedrijfsnaam").className = 'veldFout';
       if(melding == "") document.getElementById("Bedrijfsnaam").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Bedrijfsnaam").className = 'veld';
   }
	   
	 if(formulier.Contactpersoon.value == "")
   {
       document.getElementById("Contactpersoon").className = 'veldFout';
       if(melding == "") document.getElementById("Contactpersoon").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Contactpersoon").className = 'veld';
   }
	 
   if(formulier.Adres.value == "")
   {
       document.getElementById("Adres").className = 'veldFout';
       if(melding == "") document.getElementById("Adres").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Adres").className = 'veld';
   }

   if(formulier.Postcode.value == "")
   {
       document.getElementById("Postcode").className = 'veldFout';
       if(melding == "") document.getElementById("Postcode").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Postcode").className = 'veld';
   }

   if(formulier.Plaats.value == "")
   {
       document.getElementById("Plaats").className = 'veldFout';
       if(melding == "") document.getElementById("Plaats").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Plaats").className = 'veld';
   }

   if(formulier.Email.value == "")
   {
       document.getElementById("Email").className = 'veldFout';
       if(melding == "") document.getElementById("Email").focus();
       melding = "geef melding";
   }
   else
   {
       if (formulier.Email.value.search(/^[^@]+@[^@]+.[a-z]{2,}$/i) == -1) 		
       {
           document.getElementById("Email").className = 'veldFout';
	   if(melding == "") document.getElementById("Email").focus();
           melding = "geef melding";
       }
       else
       {
           document.getElementById("Email").className = 'veld';
       }
   }
	 
	 if(formulier.Telefoonnummer.value == "")
   {
       document.getElementById("Telefoonnummer").className = 'veldFout';
       if(melding == "") document.getElementById("Telefoonnummer").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("Telefoonnummer").className = 'veld';
   }

	  if (melding !== "")
   {
       document.getElementById("Melding").style.display = 'block';
       return (false);
   }
}

function textCounter(field, maxlimit)
{
   if (field.value.length > maxlimit)
   {
       field.value = field.value.substring(0, maxlimit);
   }
}

function controleerAantalDetail(formulier)
{
   var melding = "";
	 
	 if (formulier.aantal.value == 0)
	 {
		   document.getElementById("aantal").className = 'veldFout';
       if(melding == "") document.getElementById("aantal").focus();
       melding = "geef melding";
	 }
	 else if (formulier.aantal.value.search(/^[0-9]{1,3}$/) == -1)
   {
       document.getElementById("aantal").className = 'veldFout';
       if(melding == "") document.getElementById("aantal").focus();
       melding = "geef melding";
   }
   else
   {
       document.getElementById("aantal").className = 'veld';
   }

   if (melding !== "")
   {
       document.getElementById("Melding").style.display = 'block';
       return (false);
   }
}