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.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.repeat = function(chr,count)
    {        
        var str = "";      
        for(var x=0;x<count;x++)  
        {
            str += chr
        };      
        return str;
    }