//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)


// Rounds a number to a specified number of decimals (optional)
// Inserts the character of your choice as the thousands separator (optional)
// Uses the character of your choice for the decimals separator (optional)
//
// It's not a highly optimized speed demon, but it gives the right result...
// ...do you really care how speedy it is? :)


Number.prototype.format=function(decimalPoints,thousandsSep,decimalSep){
	var val=this+'',re1=/(?:\.\d+)?$/,re2=/^(-?)(\d+)/,x,y;
	if (decimalPoints!=null){
		if (decimalPoints==0) val=Math.round(val)+'';
		else{
			if ((y=decimalPoints-(x=(Math.round((x=re1.exec(val))[0]*Math.pow(10,decimalPoints))+'')).length)>0) x=Math.pow(10,y).toString().substring(1)+x;
			val=val.replace(re1,'.'+x);
		}
	}
	if (thousandsSep && (x=re2.exec(val))){
		for (var a=x[2].split(''),i=a.length-3;i>0;i-=3) a.splice(i,0,thousandsSep);
		val=val.replace(re2,x[1]+a.join(''));
	}
	if (decimalSep) val=val.replace(/\./,decimalSep);
	return val;
}


// var x = 1234567.89532;
// x.format()                  => 1234567.89532
// x.format(2)                 => 1234567.90
// x.format(2,',')             => 1,234,567.90
// x.format(0,',')             => 1,234,568
// x.format(null,',')          => 1,234,567.89532
// x.format(null,' ',',')      => 1 234 567,89532
// x.format(2,' ',',')         => 1 234 567,90