function Validate_Email_Unsubscribe(frm)
{
	with(frm)
    {		
		if(!IsEmpty(subscriber_email, "Please enter email"))
		{
			return false;
		}
		else if(!IsEmail(subscriber_email, 'Please enter valid mail address'))
		{
			return false;
		}
	}
	
	return true;    
}

//----------------------------------------------------------------------------------------------------
//	Function Name	:	ValidateGuestBook
//----------------------------------------------------------------------------------------------------
function ValidateGuestBook(frm)
{
	with(frm)
    {
    	if(!IsEmpty(guest_name, 'Please, enter your name.'))
        {
			return false;
        }
    	if(!IsEmpty(guest_email, 'Please, enter email address.'))
        {
			return false;
        }
		if(!IsEmail(guest_email, 'Please, enter valid email address.'))
		{
			return false;
		}
		if(!IsEmpty(guest_message, 'Please, enter your comment.'))
        {
			return false;
        }
		if(!IsEmpty(signupkey, 'Please, Retype above key'))
        {
			return false;
        }		
        return true;
    }
}
//----------------------------------------------------------------------------------------------------
//	Function Name	:	Menu_ShowHide
//----------------------------------------------------------------------------------------------------
function Validate_Email(frm)
{
	with(frm)
    {		
		if(!IsEmpty(subscriber_email, "Please enter email"))
		{
			return false;
		}
		else if(!IsEmail(subscriber_email, 'Please enter valid mail address'))
		{
			return false;
		}
	}
	return true;    
}

function Menu_ShowHide(menu)
{
	if(menu)
	{
		if(menu.style.display == 'none')
		{
			preMenu = getCookie('menu');
			if(document.getElementById(preMenu))
			{
				document.getElementById(preMenu).style.visibility 	= 'hidden';
				document.getElementById(preMenu).style.display 		= 'none';
			}

			menu.style.visibility	= 'visible';
			menu.style.display		= 'block';
			setCookie('menu', menu.id, 30);
		}
		else
		{
			menu.style.visibility 	= 'hidden';
			menu.style.display 		= 'none';
			setCookie('menu', '', 30);
		}
	}
}


/**
 * Sets a Cookie with the given name and value.
 *
 * name       Name of the cookie
 * value      Value of the cookie
 * [expires]  Expiration date of the cookie (default: end of current session)
 * [path]     Path where the cookie is valid (default: path of calling document)
 * [domain]   Domain where the cookie is valid
 *              (default: domain of calling document)
 * [secure]   Boolean value indicating if the cookie transmission requires a
 *              secure transmission
 */
function setCookie(name, value, expires, path, domain, secure) {
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + getExpiryDate(expires) : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

/**
 * Gets the value of the specified cookie.
 *
 * name  Name of the desired cookie.
 *
 * Returns a string containing value of specified cookie,
 *   or null if cookie does not exist.
 */
function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

/**
 * Deletes the specified cookie.
 *
 * name      name of the cookie
 * [path]    path of the cookie (must be same as path used to create cookie)
 * [domain]  domain of the cookie (must be same as domain used to create cookie)
 */
function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

function getExpiryDate(nodays) {
	var UTCstring;

	Today = new Date();
	nomilli=Date.parse(Today);
	Today.setTime(nomilli+nodays*24*60*60*1000);
	UTCstring = Today.toUTCString();

	return UTCstring;
}


function ShowArtDetails(art_id)
{
	popupWindowURL('art.php?Action=popup&art_id='+art_id,'Art',400,520, false, false, false);
}

var flgSound = 0;

function SoundOnOff()
{
//	var flgSound = parseInt('0' + getCookie('flgSound'));
	if(!flgSound)
	{
			flgSound = 1;
			document.getElementById('soundImg').src = './templates/images/soundoff.jpg';
			document.MySound.Stop();
	}
	else
	{
			flgSound = 0;
			document.getElementById('soundImg').src = './templates/images/soundon.jpg';
			document.MySound.Play();
	}
//	setCookie('flgSound', flgSound, 31, '/');
}