<!--//

function validateForm()
{
	
	//check of datum leeg is
	if (document.form1.elements['dd1'].value == "")
	{
		alert("U bent uw datum vergeten in te vullen.");
		document.form1.elements['dd1'].focus();
		return(false);
	}
	
	//check of maand leeg is
	if (document.form1.elements['mm1'].value == "")
	{
		alert("U bent uw maand vergeten in te vullen.");
		document.form1.elements['mm1'].focus();
		return(false);
	}
	
	//check of jaar leeg is
	if (document.form1.elements['jjjj1'].value == "")
	{
		alert("U bent uw jaar vergeten in te vullen.");
		document.form1.elements['jjjj1'].focus();
		return(false);
	}
	
	//check of Naam leeg is
	if (document.form1.elements['naam'].value == "")
	{
		alert("U bent uw naam vergeten in te vullen.");
		document.form1.elements['naam'].focus();
		return(false);
	}

//check of postcode leeg is
	if (document.form1.elements['post'].value == "")
	{
		alert("U bent uw postcode vergeten in te vullen.");
		document.form1.elements['post'].focus();
		return(false);
	}

//check of letters leeg is
	if (document.form1.elements['letters'].value == "")
	{
		alert("U bent de letters van uw postcode vergeten in te vullen.");
		document.form1.elements['letters'].focus();
		return(false);
	}		
			
	//check of Email leeg is
  	if (document.form1.elements['EmailZender'].value == "")
	{
		alert("U heeft uw e-mail vergeten in te vullen.");
		document.form1.elements['EmailZender'].focus();
	    return(false);
	}
	//check of Email juist is
	if (!checkEmail(document.form1.elements['EmailZender'].value))
	{
		alert("U dient een geldig e-mailadres in te voeren");
		document.form1.elements['EmailZender'].focus();
		return(false);
	}		
	
	//check of website leeg is
	if (document.form1.elements['webs'].value == "")
	{
		alert("U heeft uw website vergeten in te vullen");
		document.form1.elements['webs'].focus();
        return(false);
	}		

}

// deze functie controleert de juistheid van het e-mailadres op meerdere punten
function checkEmail(EmailZender) {

	var foundAtSymbol = 0;
	var foundDot = 0;
	var md;

	// Go through each character in the email address.
	for (var x=0; x<EmailZender.length - 1; x++) {
		md = EmailZender.substr(x, 1);
		
		// Is the character an @ symbol?
		if (md == '@') foundAtSymbol++;
		
		// Count how many dots there are after the @ symbol.
		if (md == '.' && foundAtSymbol == 1) foundDot++;
	};
	
	// Is there only one @ symbol, and are there more than one dots?
	if (foundDot > 0 && foundAtSymbol == 1) {
		return true;
	} else {
		return false;
	};

};

//-->