function layerSetup(id,visibility){
	if(document.getElementById){
		this.obj = document.getElementById(id).style;
		this.obj.visibility = visibility;
		return this.obj;
	}
	else if(document.all){
		this.obj = document.all[id].style;
		this.obj.visibility = visibility;
		return this.obj;
	}
	else if(document.layers){
		this.obj = document.layers[id];
		this.obj.visibility = visibility;
		return this.obj;
	}
}

function visVisible(param){
	new layerSetup(param,'visible');
}
function visHidden(param){
	new layerSetup(param,'hidden');
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function IsvalidEmail(mailid) 
{		
		var str=mailid
		var flag=true;
		var at="@";
		var dot=".";
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		
		if (str.indexOf(at)==-1)
		{
			flag=false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
			flag=false;
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
			flag=false;
		if (str.indexOf(at,(lat+1))!=-1)
			flag=false;
		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
			flag=false;
		if (str.indexOf(dot,(lat+2))==-1)
			flag=false;
		if (str.indexOf(" ")!=-1)
			flag=false;
		 if(flag)
 			return true;
 		 else
 		 return false;
		 		 
}
function Trim(s) 
{
  // Remove leading spaces and carriage returns
  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
  {
    s = s.substring(1,s.length);
  }

  // Remove trailing spaces and carriage returns

  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
  {
    s = s.substring(0,s.length-1);
  }
  return s;
}
function IsNumeric(strString)
//  check for valid numeric strings	
{
var strValidChars = "0123456789.-";
var strChar;
var blnResult = true;

if (strString.length == 0) return false;

//  test strString consists of valid characters listed above
for (i = 0; i < strString.length && blnResult == true; i++)
  {
  strChar = strString.charAt(i);
  if (strValidChars.indexOf(strChar) == -1)
	 {
	 blnResult = false;
	 }
  }
return blnResult;
}

function validateform(evt)
{
	if (evt.keyCode == 13)
	{
		submitform();
	}
}

function formvalidate(array_fields,array_message)
{
	var alertfields="";
	var setfocus="";
	var i;
	for(i = 0; i < array_fields.length; i++)
	{
		if(Trim(document.getElementById(array_fields[i]).value) == "")
		{
			alertfields+="- " + array_message[i] + "\n";
			if (setfocus=="")
			{
				 setfocus=array_fields[i];
			}
		}		
	}
	if (alertfields!="")
	{
		alert("The following field(s) cannot be left blank:\n\n"+alertfields+"\nPlease fill these fields.");
		document.getElementById(setfocus).focus();
		return false;		
	}
	
	return true;
}
function validateindexBooking() {	
	str="";		
	if(document.getElementById('checkin').value == "") {
		str +=homecheckin+".\n";	
	}
	if(document.getElementById('checkout').value == "") {
		str +=homecheckout+".\n";	
	}
	if(document.getElementById('txt_adult').value == "") {
		str +=homecheckadult+".\n";	
	}
	/*if(document.getElementById('txt_child').value == "") {
		str +="<?php echo $AantalKinderen[$langid];?>.\n";	
	}*/
	if(document.getElementById('txt_adult').value!= "" && document.getElementById('txt_child').value!= "") {
		var adult = document.getElementById('txt_adult').value;
		var child = document.getElementById('txt_child').value;
		var tot = parseInt(adult) + parseInt(child);
		if(tot>4) {
			str +="Maximum 4 members only.\n";	
		}
	}
	if (str!="") {
		msg="Voer de volgende gegevens in:\n";
		msg = msg + "----------------------------------------\n";
		msg = msg + str;
		alert(msg);
		return false;
	} else {
		document.frmbooking.submit();
	}		
	return false;
}