Ext.util.MD5 = function(s,r,hexcase,chrsz) {
    r= (typeof r=="undefined" ? false:r);
    hexcase= (typeof hexcase=="undefined" ? false:hexcase);
    chrsz= (typeof chrsz=="undefined" ? 8:chrsz);

    function safe_add(x, y){
        var lsw = (x & 0xFFFF) + (y & 0xFFFF);
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xFFFF);
    }
    function bit_rol(num, cnt){
        return (num << cnt) | (num >>> (32 - cnt));
    }
    function md5_cmn(q, a, b, x, s, t){
        return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
    }
    function md5_ff(a, b, c, d, x, s, t){
        return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
    }
    function md5_gg(a, b, c, d, x, s, t){
        return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
    }
    function md5_hh(a, b, c, d, x, s, t){
        return md5_cmn(b ^ c ^ d, a, b, x, s, t);
    }
    function md5_ii(a, b, c, d, x, s, t){
        return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
    }

    function core_md5(x, len){
        x[len >> 5] |= 0x80 << ((len) % 32);
        x[(((len + 64) >>> 9) << 4) + 14] = len;
        var a =  1732584193;
        var b = -271733879;
        var c = -1732584194;
        var d =  271733878;
        for(var i = 0; i < x.length; i += 16){
            var olda = a;
            var oldb = b;
            var oldc = c;
            var oldd = d;
            a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
            d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
            b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
            d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
            c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
            d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
            d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);
            a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
            d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
            c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
            b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
            d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
            c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
            d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
            c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
            a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
            d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
            c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
            b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
            a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
            d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
            b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
            d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
            c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
            d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
            a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
            d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
            b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
            a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
            d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
            c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
            d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
            d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
            a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
            d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
            b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd);
        }
        return [a, b, c, d];
    }
    function str2binl(str){
        var bin = [];
        var mask = (1 << chrsz) - 1;
        for(var i = 0; i < str.length * chrsz; i += chrsz) {
            bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
        }
        return bin;
    }
    function binl2str(bin){
        var str = "";
        var mask = (1 << chrsz) - 1;
        for(var i = 0; i < bin.length * 32; i += chrsz) {
            str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
        }
        return str;
    }
    function binl2hex(binarray){
        var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
        var str = "";
        for(var i = 0; i < binarray.length * 4; i++) {
            str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) + hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
        }
        return str;
    }
    return (r ? binl2str(core_md5(str2binl(s), s.length * chrsz)) : binl2hex(core_md5(str2binl(s), s.length * chrsz)));
}; 

if(!PEAR)							var PEAR = {};
if(!PEAR.HTML)						PEAR.HTML = {};
if(!PEAR.HTML.QuickForm)			PEAR.HTML.QuickForm = {};
if(!PEAR.HTML.QuickForm.renderer)	PEAR.HTML.QuickForm.renderer = {};

PEAR.HTML.QuickForm.renderer.restaurateurs = {
	forms: {},
	skipCheckOnNextUnload: false
};


PEAR.HTML.QuickForm.renderer.restaurateurs.register = function(id, waarschuwing_pagina_verlaten)
{
	this.forms[id] = {
		wijzigingControle: true
	};
	Ext.EventManager.on(window, 'beforeunload', function(e)
	{
		if(typeof(PEAR.HTML.QuickForm.renderer.restaurateurs.skipCheckOnNextUnload) != 'undefined' && PEAR.HTML.QuickForm.renderer.restaurateurs.skipCheckOnNextUnload == true)
		{
			PEAR.HTML.QuickForm.renderer.restaurateurs.skipCheckOnNextUnload = false;
			return;
		}
    	
    	if(this.forms[id].wijzigingControle)
    	{
			var isDirty = false;
	    	
			for(i=0; i < document[id].elements.length; i++)
			{
				if(document[id].elements[i].type != 'submit')
				{
					switch(document[id].elements[i].type)
					{
						case "select-one":
						case "select-multiple":
							for(var selectrow = 0; selectrow < document[id].elements[i].options.length; selectrow++)
							{
								if(	document[id].elements[i].options[selectrow].value != '' && 
									document[id].elements[i].options[selectrow].value != '0' && 
									document[id].elements[i].options[selectrow].value != '0.00' && 
									document[id].elements[i].options[selectrow].defaultSelected != document[id].elements[i].options[selectrow].selected)
								{
									isDirty = true;
								}
							}
							break;
						case "checkbox":
						case "radio":
							if(document[id].elements[i].defaultChecked != document[id].elements[i].checked)
							{
								isDirty = true;
							}
							break;
						default:
							//Enters strippen voor IE, doet er op een of andere manier nog wat enters bij
							if(	typeof(document[id].elements[i].defaultValue) != 'undefined' && document[id].elements[i].defaultValue.replace(/[\W]/gi, "") != document[id].elements[i].value.replace(/[\W]/gi, ""))
							{
								isDirty = true;
							}
							break;
					}
				}
			}
			
			if(isDirty)
			{
				e.browserEvent.returnValue = waarschuwing_pagina_verlaten;
			}
		}
    }, this);
};

PEAR.HTML.QuickForm.renderer.restaurateurs.notifyNoPageUnload = function()
{
	PEAR.HTML.QuickForm.renderer.restaurateurs.skipCheckOnNextUnload = true;
}
PEAR.HTML.QuickForm.renderer.restaurateurs.validationSubmit = function(id, form, fn)
{
	var result = fn(form);
	
	if(result == true)
	{
		PEAR.HTML.QuickForm.renderer.restaurateurs.disableWijzigingenControle(id);
	}
	return result;
}

PEAR.HTML.QuickForm.renderer.restaurateurs.disableWijzigingenControle = function(id)
{
	this.forms[id].wijzigingControle = false;
}