function getPrevMonth(current_month,current_year,DivName) 
    { 
        if(current_month == 1) 
        { 
            current_month = 12; 
            current_year = current_year - 1; 
        } 
        else 
        { 
            current_month = current_month - 1; 
        } 
        params = 'month='+current_month+'&year='+current_year+'&DivName='+DivName; 
        new Ajax.Updater(DivName,'inc_uevents_cal.php',{method:'post',parameters: params}); 
    } 
        function getNextMonth(current_month,current_year,DivName) 
        { 
            if(current_month == 12) 
            { 
                current_month = 1; 
                current_year = current_year + 1; 
            } 
            else 
            { 
                current_month = current_month + 1; 
            } 
            params = 'month='+current_month+'&year='+current_year+'&DivName='+DivName; 
            new Ajax.Updater(DivName,'inc_uevents_cal.php',{method:'post',parameters: params}); 
        }