AddScrollBarJQuerySharePoint.js

// ## Add a ScrollBar to a Page using jQuery
// ## Add a ScrollBar to an Element using jQuery
// ## Add a ScrollBar to a Div using javascript
// ## Add a ScrollBar to a SharePoint Master Pages using jQuery

// ## START Adding a ScrollBar on PAGE
    // Get the Open Window Height then Compare it to Parent Div height

    if ($('div#ms-designer-ribbon').html()) {
        //Don't Show ScrollBar
    } else {
        // Show The Scroll Bar
        var windowHeight = $(window).height();
        var outerHight = $(window).outerHeight(),
            viewOffset = (outerHight - 10),
            outerElemHight = $('div#s4-workspace').outerHeight();

        (outerElemHight > windowHeight) ? jQuery('div#s4-workspace').css({ "overflow-y": "scroll", "height": viewOffset }) : "";

        // Even When Browser Window Is Resized, Set the Elem Heigh and ScrollBar
        $(window).resize(function () {
            var outerHight = $(window).outerHeight(),
                windowHeight = $(window).height(),
                viewOffset = (outerHight - 10),
                $this = jQuery('div#s4-workspace');
            outerElemHight = $('div#s4-workspace').outerHeight();

            //(outerElemHight > windowHeight) ? $this.css({"overflow-y": "scroll", "height":outerHight}) : "";

            if (outerElemHight > windowHeight) {
                $this.css({ "overflow-y": "scroll", "height": viewOffset });
            }
        });
    }// end if else
    // ## END Adding a ScrollBar in Timesheet View