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 OpenWin(mypage,myname,w,h,features) {
     if(screen.width){
     var winl = (screen.width-w)/2;
     var wint = (screen.height-h)/2;
     }else{winl = 0;wint =0;}
     if (winl < 0) winl = 0;
     if (wint < 0) wint = 0;
     var settings = 'height=' + h + ',';
     settings += 'width=' + w + ',';
     settings += 'top=' + wint + ',';
     settings += 'left=' + winl + ',';
     settings += features;
     win = window.open(mypage,myname,settings);
     win.window.focus();
   }	
   
function checkIfEmpty(field) {
 if (document.getElementById(field).value != "") {
 //  document.getElementById(field).style.backgroundColor = "white";
   return true;
 } else {
//   alert(field + " is een verplicht veld");
//   document.getElementById(field).style.backgroundColor = "#FFCCCC";
//   document.getElementById(field).focus();
	return false;
 }
}   

function IsEmailValid(checkThisEmail) {
	var myEMailIsValid = true;
	var myAtSymbolAt = document.getElementById(checkThisEmail).value.indexOf('@');
	var myLastDotAt = document.getElementById(checkThisEmail).value.lastIndexOf('.');
	var mySpaceAt = document.getElementById(checkThisEmail).value.indexOf(' ');
	var myLength = document.getElementById(checkThisEmail).length;
	
	
	// at least one @ must be present and not before position 2
	// @yellow.com : NOT valid
	// x@yellow.com : VALID
	
	if (myAtSymbolAt < 1 ) 
	 {myEMailIsValid = false}
	
	// at least one . (dot) afer the @ is required
	// x@yellow : NOT valid
	// x.y@yellow : NOT valid
	// x@yellow.org : VALID
	
	if (myLastDotAt < myAtSymbolAt) 
	 {myEMailIsValid = false}
	
	// at least two characters [com, uk, fr, ...] must occur after the last . (dot)
	// x.y@yellow. : NOT valid
	// x.y@yellow.a : NOT valid
	// x.y@yellow.ca : VALID
	
	if (myLength - myLastDotAt <= 2) 
	 {myEMailIsValid = false}
	
	
	// no empty space " " is permitted (one may trim the email)
	// x.y@yell ow.com : NOT valid
	
	if (mySpaceAt != -1) 
	 {myEMailIsValid = false}
	
	
	if (myEMailIsValid == true) {
//		document.getElementById(checkThisEmail).style.backgroundColor = "white";
		return true;
	} else {
//    	alert("email is not correct");
//    	document.getElementById(checkThisEmail).style.backgroundColor = "#FFCCCC";
//		document.getElementById(checkThisEmail).focus();
		return false;
	}
}

function ReadMore(iID, val) {
	if (document.getElementById("layer_"+iID).innerHTML == document.getElementById("layer_short_"+iID).innerHTML) {
		document.getElementById("layer_"+iID).innerHTML = document.getElementById("layer_"+iID).innerHTML + '<br>' +document.getElementById("layer_long_"+iID).innerHTML;
	}  else {
		document.getElementById("layer_"+iID).innerHTML = document.getElementById("layer_short_"+iID).innerHTML;
	}
}