var ie4 = false;
if (!document.getElementById && document.all) { ie4 = true; }

function ajaxRequest(url,params) {
	var httpRequest;
	if (window.XMLHttpRequest) {
		httpRequest = new XMLHttpRequest();
		if (httpRequest.overrideMimeType) {
			httpRequest.overrideMimeType('text/xml');
		}
	} 
	else if (window.ActiveXObject) {
		try {
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (e) {
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (e) {}
		}
	}
	if (!httpRequest) {
		alert('Interactieve verbinding met de server mislukt.');
		return false;
	}
	httpRequest.onreadystatechange = function() { ajaxResponse(httpRequest); };
	httpRequest.open('POST', url, true);
	httpRequest.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	httpRequest.send(params);	
}

var myWidth = 0, myHeight = 0;
function calcSize() {
    if( typeof( window.innerWidth ) == 'number' ) {
        myWidth = window.innerWidth;
        myHeight = window.innerHeight;
    } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
        myWidth = document.documentElement.clientWidth;
        myHeight = document.documentElement.clientHeight;
    } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
    }
}
calcSize();

function getObject(id) { 
    if (ie4) { return document.all[id]; } 
    else { return document.getElementById(id); } 
}

function submitBox(mijnID) {
    var d = getObject("sb" + String(mijnID));
    d.style.display = "none";
    var d = getObject("si" + String(mijnID));
    d.style.display = "inline";
}

function submitform(mijnform){
    var d = getObject(String(mijnform));
    if (d.onsubmit) { if (d.onsubmit() == false) { return; } }
    d.submit();
}

function DocumentTonen(myMIME, myURI, myOmschijving) {
    if (myMIME == "JPEG") { window.open('/afbeelding.asp?afbeelding=' + myURI + '&omschrijving=' + myOmschijving,'_new','width=800,height=600,toolbar=0,status=0,resizable=1,directories=0,menubar=0,scrollbars=1,location=1') }
    else { window.open(myURI,'_new','width=800,height=600,toolbar=0,status=0,resizable=1,directories=0,menubar=0,scrollbars=1,location=1') }
}

function AfbeeldingTonen(myURI) {
    window.open(myURI,'_new','width=630,height=630,toolbar=0,status=0,resizable=0,directories=0,menubar=0,location=1');
}

function ToonPopup(wijze) {
	window.open("/betalingswijze.asp?wijze="+wijze,"_blank","width=600,height=300,location=1,toolbar=0,status=0,scrollbars=0,resizable=0,directories=0,menubar=0");
}