var catalogusWin = null;
function catalogus_zoom(url) {
	if (catalogusWin && catalogusWin.open && !catalogusWin.closed) catalogusWin.close();
	 var width  = 1024;
	 var height = 800;
	 var left   = (screen.width  - width)/2;
	 var top    = (screen.height - height)/2;
	 var params = 'width='+width+', height='+height;
	 params += ', top='+top+', left='+left;
	 params += ', directories=no';
	 params += ', location=no';
	 params += ', menubar=no';
	 params += ', resizable=no';
	 params += ', scrollbars=no';
	 params += ', status=no';
	 params += ', toolbar=no';
	 catalogusWin=window.open(url,'Catalogus_2009', params);
	 if (window.focus) {catalogusWin.focus()}
		return false;
}

function stopRKey(evt) {
	var evt  = (evt) ? evt : ((event) ? event : null);
	var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
	if ((evt.keyCode == 13) && (node.type=="text")) { return false; }
}
document.onkeypress = stopRKey;

function showMenuDesc(x){
	window.status = x;
	return true;
}
function wipeMenuDesc(){
	window.status = "";
	return true;
}
function checkEmail(){
	if(IsEmail(document.emailadres.email.value)){
		document.emailadres.submit();
	}else{
		alert("U heeft geen geldig e-mail adres ingevoerd.");
		document.emailadres.email.focus();
	}

}

function IsEmail(email) {
	var tmp = "" + email + "", s = tmp.replace(/^\s*|\s*$/g, "");
	var re = /^(\w|[^_]\.|[\-])+((\@){1}([^_]))(([a-z]|[\d]|[\-]|\.)+|([^_]\.[^_])*)+\.[a-z]{2,3}$/i
	if (!re.test(s)) {return false;}
	re = /\.(a[c-gil-oq-uwz]|b[a-bd-jm-or-tvwyz]|c[acdf-ik-orsuvx-z]|d[ejkmoz]|e[ceghr-u]|f[i-kmorx]|g[abd-ilmnp-uwy]|h[kmnrtu]|i[delm-oq-t]|j[emop]|k[eg-imnprwyz]|l[a-cikr-vy]|m[acdghk-z]|n[ace-giloprtuz]|om|p[ae-hk-nrtwy]|qa|r[eouw]|s[a-eg-ort-vyz]|t[cdf-hjkm-prtvwz]|u[agkmsyz]|v[aceginu]|w[fs]|y[etu]|z[admrw]|com|edu|net|org|mil|gov)$/i
	if (!re.test(s)) {return false;}
	re = /\@\@/
	return(!re.test(s));
}