function addEvent(obj,type,fn)
{
	if (obj.addEventListener)
		obj.addEventListener(type,fn,false);
	else if (obj.attachEvent)
		obj.attachEvent("on"+type,fn);
}

function removeEvent(obj,type,fn)
{
	if (obj.removeEventListener)
		obj.removeEventListener(type,fn,false);
	else if (obj.detachEvent)
	{
		obj.detachEvent("on"+type,fn);
	}
}

function getFormFieldsForNode(node)
{
	var allFormFields = new Array;
	var x = node.getElementsByTagName('input');
	for (var i=0;i<x.length;i++)
		allFormFields.push(x[i]);
	var y = node.getElementsByTagName('select');
	for (var i=0;i<y.length;i++)
		allFormFields.push(y[i]);
	return allFormFields;
}

function escapeHTML(str)
{
   var div = document.createElement('div');
   var text = document.createTextNode(str);
   div.appendChild(text);
   return div.innerHTML;
}

function initConsole()
{
    var console = document.createElement('div');
    console.id = 'errorConsole';
    document.body.appendChild(console);
}

function writeToConsole(message)
{
    var console = document.getElementById('errorConsole');
    if (console)
    {
        var newMessage = document.createElement('p');
        newMessage.innerHTML = message;
        console.appendChild(newMessage);
    }
}

function trimAll(sString)
{
    while (sString.substring(0,1) == ' ')
    {
        sString = sString.substring(1, sString.length);
    }
    while (sString.substring(sString.length-1, sString.length) == ' ')
    {
        sString = sString.substring(0,sString.length-1);
    }
    return sString;
}

function request(param)
{
    var value = '';
    if (document.location.search)
    {
        var startPos = document.location.search.toUpperCase().indexOf(param.toUpperCase());
        if (startPos != -1)
        {
            startPos += param.length + 1;
            var endPos = document.location.search.indexOf('&', startPos);
            if (endPos != -1)
                value = document.location.search.substring(startPos, endPos);
            else
                value = document.location.search.substring(startPos);
        }
     }
     return value;
}

function getFunctionName(funcName)
{
    funcName = funcName.substr('function '.length);        // trim off "function "
    funcName = funcName.substr(0, funcName.indexOf('('));        // trim off everything after the function name
    return funcName;
}

function emailCheck(emailStr) 
{
	/* The following variable tells the rest of the function whether or not
	to verify that the address ends in a two-letter country or well-known
	TLD.  1 means check it, 0 means don't. */

	var checkTLD=1;

	/* The following is the list of known TLDs that an e-mail address must end with. */

	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

	/* The following pattern is used to check if the entered e-mail address
	fits the user@domain format.  It also is used to separate the username
	from the domain. */

	var emailPat=/^(.+)@(.+)$/;

	/* The following string represents the pattern for matching all special
	characters.  We don't want to allow special characters in the address. 
	These characters include ( ) < > @ , ; : \ " . [ ] */

	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

	/* The following string represents the range of characters allowed in a 
	username or domainname.  It really states which chars aren't allowed.*/

	var validChars="\[^\\s" + specialChars + "\]";

	/* The following pattern applies if the "user" is a quoted string (in
	which case, there are no rules about which characters are allowed
	and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	is a legal e-mail address. */

	var quotedUser="(\"[^\"]*\")";

	/* The following pattern applies for domains that are IP addresses,
	rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	e-mail address. NOTE: The square brackets are required. */

	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

	/* The following string represents an atom (basically a series of non-special characters.) */

	var atom=validChars + '+';

	/* The following string represents one word in the typical username.
	For example, in john.doe@somewhere.com, john and doe are words.
	Basically, a word is either an atom or quoted string. */

	var word="(" + atom + "|" + quotedUser + ")";

	// The following pattern describes the structure of the user

	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

	/* The following pattern describes the structure of a normal symbolic
	domain, as opposed to ipDomainPat, shown above. */

	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

	/* Finally, let's start trying to figure out if the supplied address is valid. */

	/* Begin with the coarse pattern to simply break up user@domain into
	different pieces that are easy to analyze. */

	var matchArray=emailStr.match(emailPat);

	if (matchArray==null) {

	/* Too many/few @'s or something; basically, this address doesn't
	even fit the general mould of a valid e-mail address. */

	alert("Email address seems incorrect (check @ and .'s)");
	return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	// Start by checking that only basic ASCII characters are in the strings (0-127).

	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	alert("Ths username contains invalid characters.");
	return false;
		 }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	alert("Ths domain name contains invalid characters.");
	return false;
		 }
	}

	// See if "user" is valid 

	if (user.match(userPat)==null) {

	// user is not valid

	alert("The username doesn't seem to be valid.");
	return false;
	}

	/* if the e-mail address is at an IP address (as opposed to a symbolic
	host name) make sure the IP address is valid. */

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {

	// this is an IP address

	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	alert("Destination IP address is invalid!");
	return false;
		 }
	}
	return true;
	}

	// Domain is symbolic name.  Check if it's valid.
	 
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
	if (domArr[i].search(atomPat)==-1) {
	alert("The domain name does not seem to be valid.");
	return false;
		 }
	}

	/* domain name seems valid, but now make sure that it ends in a
	known top-level domain (like com, edu, gov) or a two-letter word,
	representing country (uk, nl), and that there's a hostname preceding 
	the domain or country. */

	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	alert("The address must end in a well-known domain or two letter " + "country.");
	return false;
	}

	// Make sure there's a host name preceding the domain.

	if (len<2) {
	alert("This address is missing a hostname!");
	return false;
	}

	// If we've gotten this far, everything's valid!
	return true;
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function deleteCookie( name, path, domain )
{
	if ( readCookie( name ) )
	{
		document.cookie = name + "=" + 
		( ( path ) ? ";path=" + path : "") +
		( ( domain ) ? ";domain=" + domain : "" ) +
		";expires=Thu, 01-Jan-1970 00:00:01 GMT";
	}
}

function setCookie(name, value, expires, path, domain, secure) 
{
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime(today.getTime());

	/*
	if the expires variable is set, make the correct 
	expires time, the current script below will set 
	it for x number of days, to make it for hours, 
	delete * 24, for minutes, delete * 60 * 24
	*/
	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" : "" );
}