function checkIt(s) {
	if (document.Emailform.fid.value  == ''){
       alert('Please choose a subject.');
       return false;
     } 		
	if (document.Emailform.name.value  == ''){
       alert('Please enter your name.');
       return false;
     } 
      if(!((document.Emailform.who[0].checked) || (document.Emailform.who[1].checked))){
     alert("Please choose Mr or Mrs/Ms");
     return false;
        }
      if (document.Emailform.functie.value  == ''){
       alert('Please enter your function.');
       return false;
     } 
     if (document.Emailform.company.value  == ''){
       alert('Please enter your company name.');
       return false;
     } 
     if (document.Emailform.address.value  == ''){
       alert('Please enter your address.');
       return false;
     } 
     if (document.Emailform.pc.value  == ''){
       alert('Please enter your postcode.');
       return false;
     } 
      if (document.Emailform.city.value  == ''){
       alert('Please enter your town/city.');
       return false;
     } 
      if (document.Emailform.country.value  == ''){
       alert('Please enter your country.');
       return false;
     } 
      if (document.Emailform.tel.value  == ''){
       alert('Please enter your telephone number.');
       return false;
     } 
      if (document.Emailform.fax.value  == ''){
       alert('Please enter your fax number.');
       return false;
     } 
      if (document.Emailform.site.value  == ''){
       alert('Please enter your website address.');
       return false;
     } 
     if (document.Emailform.email.value  == ''){
       alert('Please enter your e-mail adress.');
       return false;
     } 
     
	//email check
	if (!document.Emailform.email.value  == ''){
	
		var emailStr = document.Emailform.email.value
		var emailPat=/^(.+)@(.+)$/
		var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
		var validChars="\[^\\s" + specialChars + "\]"
		var quotedUser="(\"[^\"]*\")"
		var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
		var atom=validChars + '+'
		var word="(" + atom + "|" + quotedUser + ")"
		var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
		var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
		
		var matchArray=emailStr.match(emailPat)
		if (matchArray==null) {
			alert("Invalid emailaddress (check @ and .)")
			return false
		}
		var user=matchArray[1]
		var domain=matchArray[2]
		
		if (user.match(userPat)==null) {
		    // user is not valid
		    alert("Invalid emailaddress (de gebruikersnaam is niet geldig)")
		    return false
		}
		
		var IPArray=domain.match(ipDomainPat)
		if (IPArray!=null) {
		    // this is an IP address
			  for (var i=1;i<=4;i++) {
			    if (IPArray[i]>255) {
			        alert("Invalid emailaddress (het IP-adres is niet geldig)")
				return false
			    }
		    }
		    return true
		}
		
		var domainArray=domain.match(domainPat)
		if (domainArray==null) {
			alert("Invalid emailaddress (de domeinnaam is niet correct)")
		    return false
		}
		
		var atomPat=new RegExp(atom,"g")
		var domArr=domain.match(atomPat)
		var len=domArr.length
		if (domArr[domArr.length-1].length<2 || 
		    domArr[domArr.length-1].length>4) {
		   // the address must end in a two letter or three letter word.
		   alert("Invalid emailaddress (het adres moet eindigen in een domein van 4 letters of een landaanduiding van 2 letters)")
		   return false
		}
		
		if (len<2) {
		   var errStr=("Invalid emailaddress (dit adres mist een hostname)")
		   alert(errStr)
		   return false
		}
	} 
	//einde email check

    return true;
}
// -->