//personen check
function checkdln(waarde){
	if (waarde==""){
		alert("Kies het aantal reisgenoten a.u.b.");
		//waarde.select();
		return false;
	}else{
		return true;
	}	
}

function flipoff2(im){
		document[im].src = 'img/' + im + '.gif';
}
function flipon2(im){
	document[im].src = 'img/' + im + '_s.gif';

}

//change order
function changeorder(veld){
	document.selopmaat.vlg.value=veld;
	document.selopmaat.submit();
}

//reload in frame
if (top == self) {
	var url = 'index.php?url=' + escape(location.pathname + location.search + location.hash );
	if (document.images) location.replace(url);
	else location.href = url;
}

var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i;

//email check
function checkmail(e){
	var returnval=emailfilter.test(e.value);
	if (returnval==false){
		alert("Geldig e-mail adres invullen a.u.b.!");
		e.select();
		return false;
	}else{
		return true;
	}	
}

//formcheck
function formCheck(formobj){
	//1) Enter name of mandatory fields
	var fieldRequired = Array("naam", "plaats", "telefoon", "email", "kamer1_aantal");
	//2) Enter field description to appear in the dialog box
	var fieldDescription = Array("naam", "plaats", "telefoon", "email", "aantal kamers");
	//3) Enter dialog message
	var alertMsg = "Vult u a.u.b. nog de volgende velden in:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}