Date.prototype.formatDate = function(format){
    var date = this;
    if (!format)
    	format="MM/dd/yyyy";
    var month = date.getMonth() + 1;
    var year = date.getFullYear();
	format = format.replace("MM",month.toString().padL(2,"0"));
	if (format.indexOf("yyyy") > -1)
    	format = format.replace("yyyy",year.toString());
    else if (format.indexOf("yy") > -1)        format = format.replace("yy",year.toString().substr(2,2));
			format = format.replace("dd",date.getDate().toString().padL(2,"0"));
	var hours = date.getHours();
	if (format.indexOf("t") > -1) {
    	if (hours > 11)
    		format = format.replace("t","pm")
		else 
	    	format = format.replace("t","am")
	}
    if (format.indexOf("HH") > -1)
    	format = format.replace("HH",hours.toString().padL(2,"0"));
    if (format.indexOf("hh") > -1) {
    	if (hours > 12) hours - 12;
	    if (hours == 0) hours = 12;
	    format = format.replace("hh",hours.toString().padL(2,"0"));
	}
    if (format.indexOf("mm") > -1)
    	format = format.replace("mm",date.getMinutes().toString().padL(2,"0"));
    if (format.indexOf("ss") > -1)
    	format = format.replace("ss",date.getSeconds().toString().padL(2,"0"));
    return format;
	}
	
String.repeat = function(chr,count){
    var str = "";
	for(var x=0;x<count;x++) {
	   str += chr
	   };
	return str;
	}
	
String.prototype.padL = function(width,pad) {
    if (!width ||width<1)
     	return this;
    if (!pad) pad=" ";
	var length = width - this.length;
    if (length < 1)
    	return this.substr(0,width);
	return (String.repeat(pad,length) + this).substr(0,width);
    }

String.prototype.padR = function(width,pad) {
    if (!width || width<1)
    	return this;
	if (!pad) pad=" ";
    var length = width - this.length;
    if (length < 1)
    	this.substr(0,width);
	return (this + String.repeat(pad,length)).substr(0,width);
	}

String.format = function(frmt,args) {
    for(var x=0; x<arguments.length; x++) {
    	frmt = frmt.replace("{" + x + "}",arguments[x+1]);
		}
	return frmt;
	}