function setform(s){
clearfields(s);
if (s == "phonenumber"){
	zoek.telefoonnummer.checked=true;
	hidefields();
	showfield(zoek.phonenumber);
	}
else if (s == "lastname" || s == "all"){
	zoek.lastname.checked=true;
	hidefields();
	showfield(zoek.townname);
	showfield(zoek.lastname);
	}
else if (s == "address"){
	zoek.adres.checked=true;
	hidefields();
	showfield(zoek.townname);
	showfield(zoek.housenumber);
	showfield(zoek.streetname);
	}
else if (s == "postalcode"){
	zoek.postcode.checked=true;
	hidefields();
	showfield(zoek.townname);
	showfield(zoek.postalcode);
	}
}

function hidefields(){
//zoek.lastname.className = "disabled";
zoek.phonenumber.className = "disabled";
zoek.streetname.className = "disabled";
zoek.housenumber.className = "disabled";
zoek.postalcode.className = "disabled";
zoek.townname.className = "disabled";

//zoek.lastname.disabled=true;
zoek.phonenumber.disabled=true;
zoek.streetname.disabled=true;
zoek.housenumber.disabled=true;
zoek.postalcode.disabled=true;
zoek.townname.disabled=true;
}

function clearfields(c){
if (c == "phonenumber"){
	//zoek.lastname.value="";
	zoek.streetname.value="";
	zoek.housenumber.value="";
	zoek.postalcode.value="";
	zoek.townname.value="";
	}
else if (c == "lastname"){
	zoek.phonenumber.value="";
	zoek.streetname.value="";
	zoek.housenumber.value="";
	zoek.postalcode.value="";
	}
else if (c == "address"){
	//zoek.lastname.value="";
	zoek.phonenumber.value="";
	zoek.postalcode.value="";
	}
else if (c == "postalcode"){
	//zoek.lastname.value="";
	zoek.phonenumber.value="";
	zoek.streetname.value="";
	zoek.housenumber.value="";
	}
else if (c == "all"){
	//zoek.lastname.value="";
	zoek.phonenumber.value="";
	zoek.streetname.value="";
	zoek.housenumber.value="";
	zoek.postalcode.value="";
	zoek.townname.value="";
	}

}

function showfield(f){
f.className = "enabled";
f.disabled=false;
f.focus();
}