Rounds decimals ending in .49 up to .5. (Native JS Math.round() method rounds XX.49 down to XX.) If you want to use the Math.round() method but want to round up X.49, use this method in place of Math.round().

roundUp49

var _round = function(num) {
    if(isDecimal(num)) {
        var num_array = num.toString().split(".");
        var whole_num = parseInt(num_array[0]);
        var decimal_num = parseFloat("." + num_array[1]);
        if(decimal_num > .444444444444444 && decimal_num < .5) {
        	decimal_num = .5;
        }           
        num = whole_num + decimal_num;
    }                
    return Math.round(num);
};

var isDecimal = function(num) {
    return num % 1 === 0 ? false : true;
};