function countdown_clock(year, month, day, hour, minute, format)
         {
         //I chose a div as the container for the timer, but
         //it can be an input tag inside a form, or anything
         //who's displayed content can be changed through
         //client-side scripting.
         html_code = '<div id="countdown"></div>';
         
         document.write(html_code);
         
         Today = new Date();
         Todays_Year = Today.getFullYear() - 2000;
         Todays_Month = Today.getMonth() + 1; 
         
         
                  
         //Computes the time difference between the client computer and the server.
         Server_Date = (new Date(24, 5, 8,
                                 15, 23, 1)).getTime();
         Todays_Date = (new Date(Todays_Year, Todays_Month, Today.getDate(),
                                 Today.getHours(), Today.getMinutes(), Today.getSeconds())).getTime();
         
         month = month - 1;
         countdown(year, month, day, hour, minute, (Todays_Date - Server_Date), format);                
         }
         
function countdown(year, month, day, hour, minute, time_difference, format)
         {
         Today = new Date();
         Todays_Year = Today.getFullYear() - 2000;
         //Todays_Month = Today.getMonth() + 1; //wrong since months are calculated from 0 to 11
         Todays_Month = Today.getMonth();
                                             
         //Convert today's date and the target date into miliseconds.
         
         Todays_Date = (new Date(Todays_Year, Todays_Month, Today.getDate(),
                                 Today.getHours(), Today.getMinutes(), Today.getSeconds())).getTime();
         Target_Date = (new Date(year, month, day, hour, minute, 00)).getTime();
         
         //Find their difference, and convert that into seconds.
         //Taking into account the time differential between the client computer and the server.
         Time_Left = Math.round((Target_Date - Todays_Date + time_difference) / 1000);
         
         if(Time_Left < 0) {
            Time_Left = 0;
            // added to reload the page when the time left = 0
            //window.location.reload( false );
            document.all.countdown.innerHTML = '';
            return;
         }
         
         switch(format)
               {
               case 0:
                    //The simplest way to display the time left.
                    document.all.countdown.innerHTML = Time_Left + ' seconds';
                    break;
               case 1:
                    //More datailed.
                    days = Math.floor(Time_Left / (60 * 60 * 24));
                    Time_Left %= (60 * 60 * 24);
                    hours = Math.floor(Time_Left / (60 * 60));
                    Time_Left %= (60 * 60);
                    minutes = Math.floor(Time_Left / 60);
                    Time_Left %= 60;
                    seconds = Time_Left;
                    
                    //dps = 'en'; hps = ''; mps = ''; sps = 'n';
                    //ps is short for plural suffix.
                    if(days == 1) { dps ='dag'; } else { dps = 'dagen'; };
                        
                    if(hours <= 1) { hps ='uur'; } else { hps = 'uren'; };
                    
                    if(minutes == 1) { mps ='minuut'; } else { mps = 'minuten'; };
                        
                    if(seconds <= 1) { sps ='seconde'; } else { sps = 'seconden'; };
                        
                    
                    document.all.countdown.innerHTML = 'Nog ' + days + ' ' + dps + ' ';
                    document.all.countdown.innerHTML += hours + ' ' + hps + ' ';
                    document.all.countdown.innerHTML += minutes + ' ' + mps + ' en ';
                    document.all.countdown.innerHTML += seconds + ' ' + sps;
                    break;
               default: 
                    document.all.countdown.innerHTML = Time_Left + sps;
               }
               
         //Recursive call, keeps the clock ticking.
         setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + 
                     time_difference + ', ' + format + ');', 1000);
         }