// 
function NewWindow(mypage, myname, w, h, scroll)
	{
		var winl = (screen.width - w) / 2;
		var wint = (screen.height - h) / 2;
		winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable=no, directories=no, location=no, menubar=no, status=no, toolbar=no'
		win = window.open(mypage, myname, winprops)
		if (parseInt(navigator.appVersion) >= 4)
			{
				win.window.focus();
			}
	}

var message="";
function clickIE()
{
if (document.all) {(message);return false;}
}
function clickNS(e) 
{
if (document.layers||(document.getElementById&&!document.all)) 
{
if (e.which==2||e.which==3) {(message);return false;}
}
}
if (document.layers) 
{
document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;
}
else
{
document.onmouseup=clickNS;document.oncontextmenu=clickIE;
}
document.oncontextmenu=new Function("return false")

// de aantal karakters in cijfers laat zien binnen een form
// object. handig om te laten zien hoeveel karakters gebruiker intypt
var ns6=document.getElementById&&!document.all

function restrictinput(maxlength,e,placeholder)
{
if (window.event&&event.srcElement.value.length>=maxlength)
return false
else if (e.target&&e.target==eval(placeholder)&&e.target.value.length>=maxlength)
{
var pressedkey=/[a-zA-Z0-9\.\,\/]/ //dedecteert alphanumerieke toetsen
if (pressedkey.test(String.fromCharCode(e.which)))
e.stopPropagation()
}
}

function countlimit(maxlength,e,placeholder)
{
var theform=eval(placeholder)
var lengthleft=maxlength-theform.value.length
var placeholderobj=document.all? document.all[placeholder] : document.getElementById(placeholder)
if (window.event||e.target&&e.target==eval(placeholder))
{
if (lengthleft<0)
theform.value=theform.value.substring(0,maxlength)
placeholderobj.innerHTML=lengthleft
}
}

function displaylimit(theform,thelimit)
{
var limit_text='<span class=teller id="'+theform.toString()+'">'+thelimit+'</span>'
if (document.all||ns6)
document.write(limit_text)
if (document.all)
{
eval(theform).onkeypress=function(){ return restrictinput(thelimit,event,theform)}
eval(theform).onkeyup=function(){ countlimit(thelimit,event,theform)}
}
else if (ns6)
{
document.body.addEventListener('keypress', function(event) { restrictinput(thelimit,event,theform) }, true); 
document.body.addEventListener('keyup', function(event) { countlimit(thelimit,event,theform) }, true); 
}
}

// netscape resize Fix
// fixes well documented bug that blows page up after resize
if (document.layers)
{
origWidth = innerWidth;
origHeight = innerHeight;
}
function reDo()
{
if (innerWidth != origWidth || innerHeight != origHeight)
location.reload();
}
if (document.layers) onresize = reDo;

//
function borderit(which,color)
{
if (document.all||document.getElementById)
{which.style.borderColor=color;}
}

// error stop
function stopError()
{
return true;
}
window.onerror = stopError;

// verwijderd ongewilde karakters
function rem_obj(obj)
{
obj.value = obj.value.replace(/'/g, "");
obj.value = obj.value.replace(/"/g, "");
obj.value = obj.value.replace(/;/g, "");
obj.value = obj.value.replace(/</g, "");
obj.value = obj.value.replace(/>/g, "");
}