function doPostback(x) {
	var frm = document.forms["mainform"];
	frm.do_action.value = x;
	document.forms["mainform"].submit();
	return true;
}
function removeAuthor(x) {
	var frm = document.forms["mainform"];
	frm.author_to_remove.value = x;
	doPostback("remove_author");
}
function catchEnter(field, event, x) {
	var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
	if (keyCode == 13) {
		doPostback(x);
		return false;
	} else {
		return true;
	}
}

function selectType(idToSelect) {
	var radio = document.getElementById(idToSelect);
	radio.checked = true;
}