RGB to Hex javascript

gistfile1.js

var hex = rgb_to_colour(255, 255, 255);

rgb_to_colour: function(r,g,b)
{
	return '#' + byte_to_hex(r) + byte_to_hex(g) + byte_to_hex(b);
},

byte_to_hex: function(n)
{
	var nybHexString = "0123456789ABCDEF";
	return String(nybHexString.substr((n >> 4) & 0x0F,1)) + nybHexString.substr(n & 0x0F,1);
}