// JavaScript Document

var duration = 0.5;

document.observe('dom:loaded', function() {
	$$('.show_news').invoke('observe','click', showNews);
});

showNews = function(e)
{
	Event.stop(e);
	// alert('jee');
	var href = this.href;
	var content = '<div class="overlay" id="overlay"></div>';
	$('body').insert(content);
	var dimensions = getPageSize();
	$('overlay').setStyle({ height: dimensions[1] + 'px', width: dimensions[0] + 'px', display: 'none' });
	new Effect.Appear($('overlay'),
	{
		from: 0,
		to: 0.8,
		duration: duration,
		afterFinish: function(e)
		{
			$('body').insert('<div id="news_overlay_box"></div>');
			var box_w = $('news_overlay_box').getWidth();
			var left_pos = (dimensions[0] / 2) - (box_w / 2);
			$('news_overlay_box').setStyle({ display: 'none', left: left_pos + 'px' });
			
			new Ajax.Updater($('news_overlay_box'), href,
			{
				onComplete: function(e)
				{
					new Effect.Appear($('news_overlay_box'), { duration: duration });
					$('news_overlay_box').insert('<img src="images/delete_button.gif" alt="Sulje ikkuna" id="delete_button" />');
					$('delete_button').observe('click', closeOverlay);
				}
			});
			
		}
	});
}

closeOverlay = function(e)
{
	new Effect.Fade($('news_overlay_box'),
	{
		duration: duration,
		afterFinish: function(e)
		{
			// alert('finished');
			new Effect.Fade($('overlay'),
			{
				duration: duration,
				afterFinish: function(e)
				{
					$('overlay').remove();
					$('news_overlay_box').remove();
				}
			});
		}
	});
}

getPageSize = function() {
	        
	 var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	
	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			windowWidth = self.innerWidth;
		}
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = xScroll;		
	} else {
		pageWidth = windowWidth;
	}

	return [pageWidth,pageHeight];
}