window.addEvent('domready', function(){
	$$('.main_tab').each(function(element){
		element.addEvent('mouseenter', function(){
			$(element.id + '_popup').setStyle('top', element.getCoordinates().top + element.getCoordinates().height - 12);
			$(element.id + '_popup').setStyle('left', element.getCoordinates().left);
			$(element.id + '_popup').setStyle('display', 'block');
			//$(element.id + '_popup').setOpacity(0.9);
		});
		element.addEvent('mouseleave', function(){
			if($defined($(element.id + '_popup').getProperty('sub_active')) && $(element.id + '_popup').getProperty('sub_active') == 'true') {
				$(element.id + '_popup').getProperty('sub_active') = 'false';
			} else {
				$(element.id + '_popup').setStyle('display', 'none');
			}
		});
		$(element.id + '_popup').addEvent('mouseenter', function(){
			$(element.id + '_popup').setStyle('top', element.getCoordinates().top + element.getCoordinates().height - 12);
			$(element.id + '_popup').setStyle('left', element.getCoordinates().left);
			$(element.id + '_popup').setProperty('sub_active', 'true');
			$(element.id + '_popup').setStyle('display', 'block');
			//$(element.id + '_popup').setOpacity(0.9);
		});
		$(element.id + '_popup').addEvent('mouseleave', function(){
			$(element.id + '_popup').setProperty('sub_active', 'false');
			$(element.id + '_popup').setStyle('display', 'none');
		});
	});
});