function CheckMultiple3(frm, name) {
				for (var i=0; i < frm.length; i++)
				{
					fldObj = frm.elements[i];
					fldId = fldObj.id;
					if (fldId) {
						var fieldnamecheck=fldObj.id.indexOf(name);
						if (fieldnamecheck != -1) {
							if (fldObj.checked) {
								return true;
							}
						}
					}
				}
				return false;
			}
		function CheckForm3(f) {
			if (f.email.value == "") {
				alert("Please enter your email address.");
				f.email.focus();
				return false;
			}
		
			var fname = "CustomFields_3_3";
			var fld = document.getElementById(fname);
		
			CheckNum = parseInt(fld.value);
			if(fld.value != "" && isNaN(CheckNum)) {
				alert("Please enter a numeric value for field Mobiel Nummer:");
				fld.select();
				fld.focus();
				return false;
			}
		
				return true;
			};