function validate_and_submit(checkflds) {
	var i,elem;
	for (i=0; i<checkflds.length; i++) {
		elem = df(checkflds[i]);
		if (elem && (elem.value == '')) {
			alert('Please fill all fields to continue!');
			return false;
		}
	}
	return true;
}
function df(id) {
	return window.document.getElementById(id);
}