function is_empty(f){ return (!f || /^\s*$/.test(f)); }

$(document).ready(function() {

	/*
	$('#portfolio').masonry({
		// options
		itemSelector : div,
		columnWidth : mwidth
	}).masonry( 'reload' );
	
	
	$('.photo img').each(function(){
		var margin_top 		= 0 - (parseInt($(this).attr('height')) / 2);
		var margin_left  	= 0 - (parseInt($(this).attr('width')) / 2);
		$(this).css("margin-top", margin_top);
		$(this).css("margin-left", margin_left);	
	});
	
	*/
	
	

	function frontSlider(){
		var initialFadeIn = 1000; //initial fade-in time (in milliseconds) 
		var itemInterval = 8000; //interval between items (in milliseconds)
		var fadeTime = 2500; //cross-fade time (in milliseconds)
		var numberOfItems = $('.slide').length; //count number of items
		var currentItem = 0; //set current item

		$('.slide').eq(currentItem).fadeIn(initialFadeIn); //show first item
					
		if(numberOfItems > 1){
			var infiniteLoop = setInterval(function(){ //loop through the items
				$('.slide').eq(currentItem).fadeOut(fadeTime);
					if(currentItem == numberOfItems -1){ currentItem = 0; }
					else { currentItem++; }
				$('.slide').eq(currentItem).fadeIn(fadeTime);
			}, itemInterval);
		}
	}

	frontSlider();

	
});