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\.\,\/]/ //detect alphanumeric keys
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='Nog <span id="'+theform.toString()+'">'+thelimit+'</span> karakters.'
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); 
}
}
	
<!--


function addtofav(linkUrl,LinkName)
{
  external.AddFavorite(linkUrl,LinkName);
}

function show(href, Width, Height, count, scr) {
    // wat een werk!! Pieter
    var url=href;
    var win='toolbar=0,location=0,status=0,menubar=0,directories=0,resizable=0,scrollbars=1,target=_new';

    w=Width;
    h=Height;
    var sizedwin=win + ',width=' + w + ',height=' + h + ',scrollbars=' + scr;

        if(window == 'multiple') {
                var windowname = 'Image_Window_' + count;
                open(url, windowname, sizedwin);
        }
        else {
                var windowname = 'Image_Window';
                popup = open(url, windowname, sizedwin);
                popup.focus();
        }
    return false;
}



function addtofav(linkUrl,LinkName)
{
  external.AddFavorite(linkUrl,LinkName);
}




//-->