$(document).ready(function(){
	
	jQuery.fn.delay = function(time, callback)
	{
	    return this.animate({ opacity: '+=0' }, time, callback);
	}
	
	function mainNaviAnimation() {
		var highestObj = 0;
	
		jQuery('.FUNCTION_navigation_sub').each(function(){
			if (jQuery(this).height() > highestObj) {
				highestObj = jQuery(this).height();
			}
		});
	
		jQuery('.FUNCTION_navigation_sub').animate({height:0, paddingTop:0},0);
		jQuery('.CONTAINER_mainNavi').hover(function(){
			jQuery('.FUNCTION_navigation_sub').stop(true).delay(250).animate({height: highestObj, paddingTop:13},500);
		},function(){
			jQuery('.FUNCTION_navigation_sub').stop(true).delay(250).animate({height: 0, paddingTop:0},300);
		});
	}
	
	mainNaviAnimation();
	
});