Number.prototype.toDecimals = function(n)
{
        n = (isNaN(n))? 2 : n;
        var nT = Math.pow(10, n);

        function pad(s)
        {
                s = s || ".";
                return (s.length > n) ? s : pad(s + "0");
        }
        return (isNaN(this)) ? this : (new String(Math.round(this * nT)/nT)).replace(/(\.\d*)?$/, pad);
}

function clickById(id) {
        var el = $(id);
        if (el) {
                el.fireEvent('unselect');
                el.fireEvent('click');
        }
}

function showWin(url, args, width, height, params, center)
{
        if(!params) params = "";
        var w = width ? "width=" + width + "px, " : "";
        var h = height ? "height=" + height + "px, " : "";

        var win = window.open(url, args, w + h + "help=0, toolbar=0, personalbar=0, titlebar=0, location=0, scrollbars=0, resizable=1," + params);

        if(center)
        {
                win.moveTo((window.screen.width-width)/2, (window.screen.height-height)/2)
        }

        return win;
}

function numVal(val)
{
        return isNaN(val) ? 0 : Number(val);
}