function validateFieldForm () {
	var frm = document.getElementById('field_form');
	var reason = "";
    if (frm.field_id.value == "") {
	    reason = "Field ID cannot be blank."
	}
    if (frm.field_name.value == "") {
	    reason = reason + "<br />Field name cannot be blank."
	}
	if (reason != "") {
		document.getElementById('field_errors').innerHTML = "<font color='red'>" + reason + "</font>";
		return false;
	} else {
		return true;
	}
}

function validateClusterForm () {
	var frm = document.getElementById('cluster_field_form');
	var reason = "";
    if (frm.cluster_field_id.value == "") {
	    reason = "Field cannot be blank."
	}
    if (frm.cluster_name.value == "") {
	    reason = reason + "<br />Cluster name cannot be blank."
	}
    if (frm.cluster_id.value == "") {
	    reason = reason + "<br />Cluster ID cannot be blank."
	}
	if (reason != "") {
		document.getElementById('cluster_errors').innerHTML = "<font color='red'>" + reason + "</font>";
		return false;
	} else {
		return true;
	}
}