function chkSearchFrm()
	{
		var oFrm=document.forms.frmSearch
		var oElm = null;
		var sElmName = "";
		var bChk = false;
		for(i=0; i<=oFrm.length-1; i++) {
			oElm = oFrm.elements[i];
			sElmName = oElm.name;
			if(sElmName.substring(0,3) == "opt") { if(oElm.checked) { bChk = true; } }
		}
		if(bChk) { oFrm.submit(); } else { alert('kies minimaal 1 optie'); }
	}

	function chkAdvSearchFrm()
	{
		var oFrm=document.forms.frmAdvSearch
		var oElm = null;
		var sElmName = "";
		var bChk = false;
		for(i=0; i<=oFrm.length-1; i++) {
			oElm = oFrm.elements[i];
			sElmName = oElm.name;
			if(sElmName.substring(0,3) == "opt") { if(oElm.checked) { bChk = true; } }
		}
		if(bChk) { oFrm.submit(); } else { alert('kies minimaal 1 optie'); }
	}

	function popUpFoto(URL) {
			var	W = 500;
			var H = 500;
			var L = (screen.width - W) / 2;
			var T = (screen.height - H) / 2;
			day = new Date();
			id = day.getTime();
			eval("page" + id + " = window.open('enlarge.asp?img=' + URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+W+',height='+H+',left ='+L+',top ='+T+'');");
	};