/*
	what is this?: common js scripts
	version: 3.0
	author: hexaray@hotmail.com
	update: 14 dec. 2006
	history:
		4 dec. 2006	- rename all functions.
					- add $include() function.
					- add $include_once() function.
		14 dec. 2006 - add $swap_tr() function.
	license & warrantee:
		free with no warrantee.
	requirement:
		- proto2.js to activate function "$swap_tr()".
	function list:
	_$(object_name) - get an object collection by given name.
	$is_ie() - check if browser is internet explorer.
	$is_ff() - check if browser is firefox.
	$get_cookie_val(offset) - internal function, used by $get_cookie.
	$get_cookie(cookie_name) - get cookie value from given cookie name.
	$set_cookie(cookie_name, value, expires, path, domain, secure) -  set cookie.
	$delete_cookie(cookie_name, path, domain) - remove cookie.
	$include(filename) - include a file.
	$include_once(filename) - include a file only once, the repeated call will be ignored.
	$swap_tr(tablename, row_i, row_j) - swap the i th row with the j th row in table named "tablename".
*/


// for $include_once
var $include_once_files = new Array();



function _$(namearg)
{
	var col = new Array();
	var i = 0;
	if ($is_ff())
	{
		col = document.getElementsByName(namearg);
	}
	else
	{
		for (i = 0; i < document.all.length; i++)
		{
			var e = document.all[i];
			if (typeof(e) == "object")
			{
				if (e.name == namearg)
				{
					col.push(e);
				}
			}
		}
	}
	return col;
}

function $is_ie()
{
	return (navigator.userAgent.indexOf("MSIE") >= 0);
}

function $is_ff()
{
	return (navigator.userAgent.indexOf("Firefox") >= 0);
}

function $get_cookie_val(offset)
{
   var endstr = document.cookie.indexOf (";", offset);
   if ( endstr == -1 ) endstr = document.cookie.length;
   return(unescape(document.cookie.substring(offset, endstr)));
}

/*
	Imported function from nopcart.js
	FUNCTION:    this.getCookie
	PARAMETERS:  Name
	RETURNS:     Value in Cookie
	PURPOSE:     Retrieves cookie from users browser
*/
function $get_cookie(name)
{
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while ( i < clen ) {
		var j = i + alen;
		if ( document.cookie.substring(i, j) == arg ) return($get_cookie_val(j));
		i = document.cookie.indexOf(" ", i) + 1;
		if ( i == 0 ) break;
	}
	return(null);
}

/*
	Imported function from nopcart.js
	FUNCTION:    setCookie
	PARAMETERS:  name, value, expiration date, path, domain, security
	RETURNS:     Null
	PURPOSE:     Stores a cookie in the users browser
*/
function $set_cookie(name,value,expires,path,domain,secure) {
	var today = new Date();
		today.setTime( today.getTime() );
		if ( expires )
		{
		expires = expires * 1000 * 60 * 60 * 24;
		}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name + "=" + escape (value) +
					 ((expires) ? "; expires=" + expires_date.toGMTString():"") +
					 ((path) ? "; path=" + path:"") +
					 ((domain) ? "; domain=" + domain:"") +
					 ((secure) ? "; secure":"");
}

/*
	Imported function from nopcart.js
	FUNCTION:    deleteCookie
	PARAMETERS:  Cookie name, path, domain
	RETURNS:     null
	PURPOSE:     Removes a cookie from users browser.
*/
function $delete_cookie(name,path,domain) {
   if ( this.getCookie(name) ) {
	  document.cookie = name + "=" +
						((path) ? "; path=" + path:"") +
						((domain) ? "; domain=" + domain:"") +
						"; expires=Thu, 01-Jan-70 00:00:01 GMT";
   }
}

function $include(filename)
{
	document.write("<script type='text/javascript' language='javascript' src='" + filename + "'></script>");
}

function $include_once(filename)
{
	var file_key = $md5(filename);
	if ($include_once_files[file_key] == null || typeof($include_once_files[file_key]) == 'undefined')
	{
		$include(filename)
		$include_once_files[file_key] = true;
		//alert(filename + " is added");
	}
	else
	{
		//alert(filename + " has been already included");
	}
}

function $swap_tr(tabname, row_i, row_j)
{
	var _rowset = _$(tabname)[0].rows;
	var _rowsrc = _rowset[row_i];
	var _rowdes = _rowset[row_j];
	_rowsrc.swapNode(_rowdes);
}

// exposed interface for md5
function $md5(str)
{
	return hex_md5(str);
}

function $pop_win(url, param, features)
{
	var ret = null;
	if (features)
	{
		ret = window.showModalDialog(url, param, features);
	}
	else
	{
		if (param)
		{
			ret = window.showModalDialog(url, param);
		}
		else
		{
			ret = window.showModalDialog(url);
		}
	}
	return ret;
}

function $open_win(url, name, features)
{
	var win = window.open(url, name, features);
	win.focus();
	return win;
}

/**regular expression for validate form**/
var $REGEX_ALPHANUMERIC_PATTERN = /^[a-zA-Z0-9_]+$/;

function $is_empty(s)
{	
	return ((s == null) || (s.length == 0));
}

function $is_alphanumeric(s)
{  
	var i;
	if ($is_empty(s)) 
	   if ($is_alphanumeric.arguments.length == 1) 
			return false;
	   else 
			return ($is_alphanumeric.arguments[1] == true);
	else {
		return $REGEX_ALPHANUMERIC_PATTERN.test(s);
	}
}


function $rand_param()
{
	return ("rand=" + (parseInt(Math.random() * 777777) % 100000));
}

function $confirm(text)
{
	return confirm(text);
}

function $set_select_by_value(obj, value)
{
	var selected = -1;
	for(var i = 0; i < obj.options.length; i++)
		if (obj.options[i].value == value)
		{
			selected = i;
			obj.options[i].selected = true;
		}
	obj.selectedIndex = selected;
}

function $get_checked_by_name(objname)
{
	var lst = _$(objname);
	var outlst = new Array();
	for (var i = 0; i < lst.length; i++)
	{
		if (lst[i].checked)
		{
			outlst.push(lst[i]);
		}
	}
	return outlst;
}

function $get_checked_by_name_frame(objname)
{
	var lst = document.frames("jukebox_playlist_iframe").document.getElementsByName(objname);
	var outlst = new Array();
	for (var i = 0; i < lst.length; i++)
	{
		if (lst[i].checked)
		{
			outlst.push(lst[i]);
		}
	}
	return outlst;
}

function $set_checked_by_name(objname, checked)
{
	var lst = _$(objname);
	for (var i = 0; i < lst.length; i++)
	{
		lst[i].checked = checked;
	}
}

function $set_checked_by_name_frame(objname, checked)
{
	var lst = document.frames("jukebox_playlist_iframe").document.getElementsByName(objname);
	alert(lst);
	for (var i = 0; i < lst.length; i++)
	{
		lst[i].checked = checked;
	}
}

function $is_all_checked_by_name(objname)
{
	var allchecked = true;
	var lst = _$(objname);
	for (var i = 0; i < lst.length; i++)
	{
		if (!lst[i].checked)
		{
			allchecked = false;
			break;
		}
	}
	return allchecked;
}

function $get_checked_value_by_name(objname)
{
	var lst = _$(objname);
	for (var i = 0; i < lst.length; i++)
	{
		if (lst[i].checked) return lst[i].value;
	}
	return "";
}

function $set_checked_by_name_and_value(objname, objvalue, checked)
{
	var lst = _$(objname);
	for (var i = 0; i < lst.length; i++)
	{
		if (lst[i].value == objvalue)
		{
			lst[i].checked = checked;
		}
	}
}

function $encodeURI(uri)
{
	if (encodeURIComponent)
		return encodeURIComponent(uri);
	return escape(uri)
}








































/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////// INTERNAL FUNCTIONS //////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////





/*MD5-Begin*******************************************************************/
/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test()
{
  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Calculate the HMAC-MD5, of a key and some data
 */
function core_hmac_md5(key, data)
{
  var bkey = str2binl(key);
  if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);
  for(var i = 0; i < 16; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  return core_md5(opad.concat(hash), 512 + 128);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

/*
 * Convert a string to an array of little-endian words
 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
 */
function str2binl(str)
{
  var bin = Array();
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < str.length * chrsz; i += chrsz)
    bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
  return bin;
}

/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin)
{
  var str = "";
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < bin.length * 32; i += chrsz)
    str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
  return str;
}

/*
 * Convert an array of little-endian words to a hex string.
 */
function binl2hex(binarray)
{
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i++)
  {
    str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
           hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
  }
  return str;
}

/*
 * Convert an array of little-endian words to a base-64 string
 */
function binl2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i += 3)
  {
    var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
    }
  }
  return str;
}
/*MD5-End*********************************************************************/