Table cell auto merge for same value

tableAutoRowspan.js

function tableAutoRowspan(tableObj, numberOfColumn) {
            $(tableObj).each(function () {
                var Column_number_to_Merge = numberOfColumn;

                // Previous_TD holds the first instance of same td. Initially first TD=null.
                var Previous_TD = null;
                var i = 1;
                $("tbody",this).find('tr').each(function () {
                    // find the correct td of the correct column
                    // we are considering the table column 1, You can apply on any table column
                    var Current_td = $(this).find('td:nth-child(' + Column_number_to_Merge + ')');

                    if (Previous_TD == null) {
                        // for first row
                        Previous_TD = Current_td;
                        i = 1;
                    }
                    else if (Current_td.text() == Previous_TD.text()) {
                        // the current td is identical to the previous row td
                        // remove the current td
                        Current_td.remove();
                        // increment the rowspan attribute of the first row td instance
                        Previous_TD.attr('rowspan', i + 1);
                        i = i + 1;
                    }
                    else {
                        // means new value found in current td. So initialize counter variable i
                        Previous_TD = Current_td;
                        i = 1;
                    }
                });
            });
        }