Scrollable JS table fun time

scrollThatTable.js

<script type="text/javascript">

    $(window).load(function () {
        var isIE = $.browser.msie; 
        
        setTimeout(function () {
            function sizeTableBrowser() {
                $('.rgMasterTable.data').removeClass('data'); 
                $('.rgMasterTable:visible').addClass('data'); 
                var sitewidth = $('.ajax__tab_container:visible').width();
                var tablewidth = $('table.data').width();		         		            
                                    
                if (isIE == true) {

                    $('.ajax__tab_body').css('overflow-x', 'scroll'); 

                } else {
                    $('table.data > tbody').insertBefore('table.data > tfoot');
                    $('table.data > thead').next().andSelf().wrapAll('<div class="tableOverflow">');
                    
                    $('.tableOverflow').css('width', sitewidth + 'px');

                    if (sitewidth < tablewidth) {
                        $('.tableOverflow').addClass('overflow');
                    }
                }
            }

            function reSizeTableBrowser(sitewidth, tablewidth) {
                $('.rgMasterTable:visible').addClass('data'); 
                var sitewidth = $('.ajax__tab_container:visible').width();
                var tablewidth = $('table.data').width();		         		            
                
                $('.tableOverflow').css("width", sitewidth + "px");

                if (sitewidth < tablewidth) {
                    $('.tableOverflow').addClass('overflow');
                } else if (sitewidth >= tablewidth) {
                    $('.tableOverflow').removeClass('overflow');
                } else if (sitewidth == tablewidth) {
                    $('.tableOverflow').removeClass('overflow');
                }
            }

            sizeTableBrowser();
            
            $('a.ajax__tab_tab').click(sizeTableBrowser); 
            
            $(window).resize(function () {
            	reSizeTableBrowser(); 
            }); 
        }, 400);
    });

</script>