<script>

Date.prototype.yyyymmdd = function() {         
                                
        var yyyy = this.getFullYear().toString();                                    
        var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based         
        var dd  = this.getDate().toString();             
                            
        return yyyy + (mm[1]?mm:"0"+mm[0]) + (dd[1]?dd:"0"+dd[0]);
   };

function pad(n, width, z) {
  z = z || '0';
  n = n + '';
  return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}



    </script>