<!--

function showHide(naam,pijl,src) {			
	if(naam.style.display == "none") { 		
		naam.style.display = "block";		
		nieuwepijl = src + "2.gif"; 			
		pijl.src = "http://www.opatel.nl/beeld/" + nieuwepijl;	
	} else {	
		naam.style.display = "none";	
		nieuwepijl = src + "1.gif"; 	
		pijl.src = "http://www.opatel.nl/beeld/" + nieuwepijl;	
	}
	adjustLayout();
}

function doConfirm(type) {
	switch(type) {
		case "delmessage":
			return confirm("Weet je zeker dat je dit bericht wilt verwijderen?");
		break;		
	}
}

function checkRegisterForm() {
	f = window.document.registerform;
	if(!isSelected(f.pcr)) { alert("Wilt u aangeven welke proefles u wilt volgen?"); f.pcr.focus(); return false; }
	if(!isRadioSelected(f.form_gender)) { alert("Wilt u de juiste aanhef selecteren?"); return false; }
	if(!isFilled(f.form_firstname)) { alert("Wilt u uw voornaam invullen?"); f.form_firstname.focus(); return false; }
	if(!isFilled(f.form_lastname)) { alert("Wilt u uw achternaam invullen?"); f.form_lastname.focus(); return false; }
	if(!isFilled(f.form_address)) { alert("Wilt u uw adres invullen?"); f.form_address.focus(); return false; }
	if(!isFilled(f.form_pc)) { alert("Wilt u uw postcode invullen?"); f.form_pc.focus(); return false; }
	if(!isFilled(f.form_city)) { alert("Wilt u de plaats invullen?"); f.form_city.focus(); return false; }
	if(!isFilled(f.form_tel)) { alert("Wilt u uw telefoonummer invullen?"); f.form_tel.focus(); return false; }
	if(!isFilled(f.form_email)) { alert("Wilt u een geldig e-mail invullen?\n\nZonder e-mail adres kunnen we u geen gebruikersnaam en wachtwoord toesturen."); f.form_email.focus(); return false; }
	return true;
}

function isFilled(formveld) { if (formveld.value.length == 0) { return false; } return true; }
function isSelected(tekstveld) { if(tekstveld.options[tekstveld.selectedIndex].value == "") {	return false; }	return true; }

function isRadioSelected(optionname) {	
	aantal = optionname.length;	ischecked = "nee"	
	for(i=0;i<aantal;i++) { if(optionname[i].checked) { ischecked = "ja"; break; } }	
	if(ischecked == "nee") { return false;	}
	return true;
}

if (self != top) {
    if (document.images)
        top.location.replace(window.location.href);
    else
        top.location.href = window.location.href;
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

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_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_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];}
}

//-->