SO: Toggle current excerpt and show full view and hide other full views.

animate1.js

$(function() {
	$('[id^="post-"]').click(
		function() {
			var self = $(this);
			/** Toggle all posts except for the current one. */				
			$('.post_content').not(self.find('.post_content')).hide(); 
			$('.image-box').not(self.find('.image-box')).show('slow', function(){});
			$('.post_excerpt').not(self.find('.post_excerpt')).show(500, function(){});
							
			/** Show full post but hide excerpt UI elements. */
			self.find('.post_content').show(500, function(){});
			self.find('.image-box').hide('slow', function(){});
			self.find('.post_excerpt').hide(500, function(){});
			
			/** 
				You can play with the rest of the code since I'm not sure what they do.
			*/
			//$('html, body').animate({ scrollTop: $(this).offset().top - $('#header').outerHeight() }, 500);
			/*
			if (self.hasClass('alignment-1') == true) {
				self.find('.excerpt').animate({'margin-right':'0'}, 500);
			} else if ($(this).hasClass('alignment-2') == true) {
				self.find('.excerpt').animate({'margin-left':'0'}, 500);
			}	
			*/

			/*					
			if ($(this).hasClass('alignment-1') == true) {
				$(this).find('.excerpt').animate({'margin-right':'261px'}, 500);
			} else if ($(this).hasClass('alignment-2') == true) {
				$(this).find('.excerpt').animate({'margin-left':'261px'}, 500);
			}
			*/	

		}
	);
}); 

animate2.js

$(function() {
	$('[id^="post-"]').click(
		function(e) {
		    e.preventDefault();
		    	var speed = 500;
			var self = $(this);			
			var isVisible = self.find('.post_content').is(':visible'); // full view content
			
			if (!isVisible) {
				/** Toggle all posts except for the current one. */				
				$('.post_content').not(self.find('.post_content')).hide(speed); 
				$('.image-box').not(self.find('.image-box')).show(speed);
				$('.post_excerpt').not(self.find('.post_excerpt')).show(speed);
								
				/** Show full post but hide excerpt UI elements. */
				self.find('.post_content').show(speed);
				self.find('.image-box').hide(speed);
				self.find('.post_excerpt').hide(speed);	
				$('html, body').animate({ scrollTop: $(this).offset().top - $('#header').outerHeight() }, speed);
				
				if (self.hasClass('alignment-1') == true) {
				    	self.find('.excerpt').animate({'margin-right':'0'}, speed);
    				} else if ($(this).hasClass('alignment-2') == true) {
    					self.find('.excerpt').animate({'margin-left':'0'}, speed);
    				}	
			
			} else {
				/** Bring back everything to original state */			
				$('.post_content').hide(speed);
				$('.image-box').show(speed);
				$('.post_excerpt').show(speed);	
				
    				if (self.hasClass('alignment-1') == true) {
    					self.find('.excerpt').animate({'margin-right':'261px'}, speed);
    				} else if (self.hasClass('alignment-2') == true) {
    					self.find('.excerpt').animate({'margin-left':'261px'}, speed);
    				}
			}
		}
	);
}); 

animate3.js

$(function () {
    $('[id^="post-"]').click(
        function (e) {
            e.preventDefault();
            var speed = 500;
            var self = $(this);
            var isVisible = self.find('.post_content').is(':visible'); // full view content
            if (!isVisible) {
                /** Toggle all posts except for the current one. */
                $('.post_content').not(self.find('.post_content')).hide({
  				          duration: speed, 
					          complete: function() {
            						$('.image-box').not(self.find('.image-box')).show(speed);
            						$('.post_excerpt').not(self.find('.post_excerpt')).show(speed);
            						/** Show full post but hide excerpt UI elements. */
            						self.find('.post_content').show(speed);
            						self.find('.image-box').hide(speed);
            						self.find('.post_excerpt').hide(speed);
            						$('html, body').animate({ scrollTop: $(this).offset().top - $('#header').outerHeight() }, speed);
            						if (self.hasClass('alignment-1') == true) {
            							self.find('.excerpt').animate({ 'margin-right': '0' }, speed);
            						} else if ($(this).hasClass('alignment-2') == true) {
            							self.find('.excerpt').animate({ 'margin-left': '0' }, speed);
            						}
					          }
				});
            } else {
                /** Bring back everything to original state */
                $('.post_content').hide({duration: speed, complete: function(){
          					$('.image-box').show(speed);
          					$('.post_excerpt').show(speed);
          					if (self.hasClass('alignment-1') == true) {
          						self.find('.excerpt').animate({ 'margin-right': '261px' }, speed);
          					} else if (self.hasClass('alignment-2') == true) {
          						self.find('.excerpt').animate({ 'margin-left': '261px' }, speed);
          					}	
				      }});
          }
			
        }
    );
});