function ToggleLayerVisibility(elem_id) {
    var elem = document.getElementById(elem_id);

    if (elem.style.display == 'block') {
        elem.style.display = 'none';
    } else {
        elem.style.display = 'block';
    }
}

function clickButton(e, buttonid) {
    var evt = e ? e : window.event;
    var bt = document.getElementById(buttonid);
    if (bt) {
        if (evt.keyCode == 13) {
            bt.click();
            return false;
        }
    }
}

function LitFormQty(selLit, selQty) {
    //debugger;

    var oLit = document.getElementById(selLit);
    var oQty = document.getElementById(selQty);

    if (oLit.selectedIndex == 0) {
        oQty.disabled = true;
        oQty.selectedIndex = 0;
    } else {
        oQty.disabled = false;
    }

}

function SampleFormSel(selSample, selProd, selColor, selQty) {
    //debugger;

    var oSample = document.getElementById(selSample);
    var oProd = document.getElementById(selProd);
    var oColor = document.getElementById(selColor);
    var oQty = document.getElementById(selQty);

    if (oSample.selectedIndex == 0) {
        oProd.disabled = true;
        oProd.selectedIndex = 0;
        oColor.disabled = true;
        oColor.selectedIndex = 0;
        oQty.disabled = true;
        oQty.selectedIndex = 0;
    } else { 
        oProd.disabled = false;
        oColor.disabled = false;
        oQty.disabled = false;
    }

}

function QuoteForm(selProd, selColor, txtSqFt) {
    //debugger;

    var oProd = document.getElementById(selProd);
    var oColor = document.getElementById(selColor);
    var oSqFt = document.getElementById(txtSqFt);

    if (oProd.selectedIndex == 0) {
        oColor.disabled = true;
        oColor.selectedIndex = 0;
        oSqFt.disabled = true;
        oSqFt.value = "N/A";
    } else {
        oColor.disabled = false;
        oSqFt.disabled = false;
        if (oSqFt.value == "N/A") {
            oSqFt.value = "";
        }
    }

}