function FieldsSum(prefix) {
    Suma = parseInt((document.getElementById(prefix+"Q1").value)) +
    parseInt((document.getElementById(prefix+"Q2").value)) +
    parseInt((document.getElementById(prefix+"Q3").value)) +
    parseInt((document.getElementById(prefix+"Q4").value)) + 
	parseInt((document.getElementById(prefix+"ET1").value)) +
	parseInt((document.getElementById(prefix+"ET2").value)) +
	parseInt((document.getElementById(prefix+"ET3").value));
document.getElementById(prefix+"Total").value = Suma;
}

function WOUpdate(prefix) {
    if(prefix == "h") sPrefix = "v"; else sPrefix = "h";
    if(document.getElementById(prefix+"WO").checked == true) {
        document.getElementById(sPrefix+"WO").checked = false;
        TxtFieldsEnabled(false);
        document.getElementById(prefix+"Total").value = 20;
        document.getElementById(sPrefix+"Total").value = 0;
    } else {
        TxtFieldsEnabled(true);
        //alert("ENABLE!");
    }
}

function TxtFieldsEnabled(enable) {
    if(enable) {
        document.getElementById("hQ1").disabled = false;
        document.getElementById("hQ2").disabled = false;
        document.getElementById("hQ3").disabled = false;
        document.getElementById("hQ4").disabled = false;
        document.getElementById("hET1").disabled = false;
        document.getElementById("hET2").disabled = false;
        document.getElementById("hET3").disabled = false;
        document.getElementById("hTotal").disabled = false;

        document.getElementById("vQ1").disabled = false;
        document.getElementById("vQ2").disabled = false;
        document.getElementById("vQ3").disabled = false;
        document.getElementById("vQ4").disabled = false;
        document.getElementById("vET1").disabled = false;
        document.getElementById("vET2").disabled = false;
        document.getElementById("vET3").disabled = false;
        document.getElementById("vTotal").disabled = false;
    } else {
        document.getElementById("hQ1").disabled = true;
        document.getElementById("hQ2").disabled = true;
        document.getElementById("hQ3").disabled = true;
        document.getElementById("hQ4").disabled = true;
        document.getElementById("hET1").disabled = true;
        document.getElementById("hET2").disabled = true;
        document.getElementById("hET3").disabled = true;
        document.getElementById("hTotal").disabled = true;

        document.getElementById("vQ1").disabled = true;
        document.getElementById("vQ2").disabled = true;
        document.getElementById("vQ3").disabled = true;
        document.getElementById("vQ4").disabled = true;
        document.getElementById("vET1").disabled = true;
        document.getElementById("vET2").disabled = true;
        document.getElementById("vET3").disabled = true;
        document.getElementById("vTotal").disabled = true;
    }
}