//**************************************
//  Image rollover
//
//**************************************

function MM_preloadImages()
{
    var d = document;
    
    if(d.images)
    {
        if(!d.MM_p)
        {
            d.MM_p = new Array();
        }
            
        var i;
        var j = d.MM_p.length;
        var a = MM_preloadImages.arguments;
        
        for(i = 0; i < a.length; i++)
        {
            if (a[i].indexOf("#") != 0)
            {
                d.MM_p[j] = new Image;
                d.MM_p[j++].src = a[i];
            }
        }
    }
}

function MM_swapImgRestore()
{
  var i;
  var x;
  var a = document.MM_sr;
  
  for(i = 0; a && i < a.length && (x = a[i])&& x.oSrc; i++)
  {
    x.src = x.oSrc;
  }
}

function MM_findObj(n, d)
{
    var p;
    var i;
    var x;
    
    if(!d)
    {
        d = document;
    }    
    
    if((p = n.indexOf("?")) > 0 && parent.frames.length)
    {
        d = parent.frames[n.substring(p + 1)].document;
        n = n.substring(0, p);
    }
    
    if(!(x = d[n]) && d.all)
    {
        x = d.all[n];
    }
    
    for (i = 0; !x && i < d.forms.length; i++)
    {
        x = d.forms[i][n];
    }
    
    for(i = 0; !x && d.layers && i < d.layers.length; i++)
    {
        x=MM_findObj(n,d.layers[i].document);
    }
    
    if(!x && d.getElementById)
    {
        x = d.getElementById(n);
    }
    
    return x;
}

function MM_swapImage()
{
    var i;
    var j = 0;
    var x;
    var a = MM_swapImage.arguments;
    
    document.MM_sr = new Array;
    
    for(i = 0; i < (a.length - 2); i+= 3)
    {
        if ((x=MM_findObj(a[i])) != null)
        {
            document.MM_sr[j++] = x;
            
            if(!x.oSrc)
            {
                x.oSrc=x.src;
            }
            
            x.src=a[i+2];
        }
    }
}

function getWindowHeight()
{
	var windowHeight = 0;
	
	if (typeof(window.innerHeight) == 'number')
	{
		windowHeight = window.innerHeight;
	}
	else
	{
		if (document.documentElement && document.documentElement.clientHeight)
		{
			windowHeight = document.documentElement.clientHeight;
		}
		else
		{
			if (document.body && document.body.clientHeight)
			{
				windowHeight = document.body.clientHeight;
			}
		}
	}
	
	return windowHeight;
}


function setFooter(content, footer)
{
	if (document.getElementById)
	{
		var windowHeight = getWindowHeight();
		
		if (windowHeight > 0)
		{
			var contentHeight = content.offsetHeight;
			var footerElement = footer;
			var footerHeight = footerElement.offsetHeight;
			
			/*if (windowHeight - (contentHeight + footerHeight) >= 0)
			{
				footerElement.style.position = 'relative';
				footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px';
			}
			else
			{
				footerElement.style.position = 'static';
			}*/
			
			footerElement.style.position = 'relative';
			//footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px';
		}
	}
}

function hideObject(obj)
{
    obj.style.display = "none";
}

function showObject(obj)
{
    obj.style.display = "block";
}

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 " + emailStr + " 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("Email address " + emailStr + " contains invalid characters.");
			return false;
		}
	}
	
	for (i = 0; i < domain.length; i++)
	{
		if (domain.charCodeAt(i) > 127)
		{
			alert("Email address " + emailStr + " contains invalid characters.");
			return false;
		}
	}

	// See if "user" is valid 

	if (user.match(userPat) == null)
	{
		// user is not valid

		alert("The username in " + emailStr + " 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 in " + emailStr + ".");
				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 in " + emailStr + ".");
			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 " + emailStr + " 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("Email address " + emailStr + " is missing a hostname!");
		return false;
	}

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