Date.prototype.format = function(format) //author: meizz 
	    { 
	      var o = { 
	        "M+" : this.getMonth()+1, //month 
	        "d+" : this.getDate(),    //day 
	        "h+" : this.getHours(),   //hour 
	        "m+" : this.getMinutes(), //minute 
	        "s+" : this.getSeconds(), //second 
	        "q+" : Math.floor((this.getMonth()+3)/3),  //quarter 
	        "S" : this.getMilliseconds() //millisecond 
	      } 
	      if(/(y+)/.test(format)) format=format.replace(RegExp.$1, 
	        (this.getFullYear()+"").substr(4 - RegExp.$1.length)); 
	      for(var k in o)if(new RegExp("("+ k +")").test(format)) 
	        format = format.replace(RegExp.$1, 
	          RegExp.$1.length==1 ? o[k] : 
	            ("00"+ o[k]).substr((""+ o[k]).length)); 
	      return format; 
	    }