//popup

var myPopupWindow;  
function openPopupWindow(url, name, width, height) {

    if ( myPopupWindow && !myPopupWindow.closed && myPopupWindow.location) {
        myPopupWindow.location.href = encodeUrl(url);
    }
    else {
        myPopupWindow = window.open(url, name, "location=no, scrollbars=yes, resizable=yes, toolbar=no, menubar=no, width=" + width + ", height=" + height);
        if (!myPopupWindow.opener) myPopupWindow.opener = self;
    }

    if (window.focus) { myPopupWindow.focus() }
}

function roundNumber(num, dec) {
    var result = Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec);
    return result;
}