Library for Hexadecimal working with Javascript. I based this on a lib that I found in a blog, but I don't remember the blog, so I'm sorry.

hexconverter.js

var HexConverter = {
	hexDigits : '0123456789ABCDEF',

	dec2hex : function( dec )
	{
		return( this.hexDigits[ dec >> 4 ] + this.hexDigits[ dec & 15 ] );
	},

	hex2dec : function( hex )
	{
		return( parseInt( hex, 16 ) )
	},
	
	hex2str : function ( hex )
	{
		return ( String.fromCharCode( this.hex2dec(hex) ) )
	},

	arr2str : function ( arr, base64 )
	{
	  var str = "";
	  for (a in arr){
		str += this.hex2str(arr[a]);
	  }
	  if(base64 == true){
		str = Base64.encode(str);
	  }
	  return (str);
	},

	str2hex : function ( str )
	{
	  var arr = [];
	  for (a in str){
		var charcode = str[a].charCodeAt();
		arr.push(this.dec2hex(charcode));
	  }
	  return arr;
	}
}