diff --git a/jspsych-animation.js b/jspsych-animation.js
index 84f4b2c4..d8dbae15 100644
--- a/jspsych-animation.js
+++ b/jspsych-animation.js
@@ -1,7 +1,5 @@
 // jsPsych plugin for showing animations
 // Josh de Leeuw
-//
-// dependency: jquery.canimate.js
 
 function animation_create(params)
 {
@@ -11,17 +9,9 @@ function animation_create(params)
 	{
 		trials[i] = {};
 		trials[i]["type"] = "animate";
-		//img_path needs to be of the form:
-		//   "path/PREFIX####.EXT
-		//substituting whatever values you want for PREFIX and EXT
-		//and putting the correct path information
-		//PREFIX needs to match the img_prefix param.
-		trials[i]["img_path"] = stims[i];
-		trials[i]["img_prefix"] = params["prefix"];
-		trials[i]["fps"] = params["fps"];
-		// frames is how many images are in the animation
-		trials[i]["frames"] = params["frames"];
-		trials[i]["loop"] = params["loop"];
+		trials[i]["stims"] = stims[i];
+		trials[i]["frame_time"] = params["frame_time"];
+		trials[i]["repetitions"] = params["repetitions"];
 		trials[i]["timing"] = params["timing"];
 	}
 	return trials;
@@ -29,19 +19,33 @@ function animation_create(params)
 
 function animation_trial($this, block, trial, part)
 {
-	var base_img = document.createElement('img');
-	base_img.setAttribute('src',trial.img_path);
-	base_img.setAttribute('id','animate');
-	$this.append(base_img);
-	// using the cAnimate jQuery plugin
-	$('#animate').canimate({
-		totalFrames: trial.frames,
-		imagePrefix: trial.img_prefix,
-		fps: trial.fps,
-		preload:true,
-		loop: trials.loop
-	});
-		
-	setTimeout(function(b){$('#animate').remove(); b.next();}, trial.timing[0], block);
-			
+	animate_frame = -1;
+	reps = 0;
+	switch(part)
+	{
+		case 1:
+			animate_interval = setInterval(function(){
+				showImage = true;
+				$('.animate').remove();
+				animate_frame++;
+				if(animate_frame == trial.stims.length)
+				{
+					animate_frame = 0;
+					reps++;
+					if(reps >= trial.repetitions)
+					{
+						animation_trial($this, block, trial, part + 1);
+						clearInterval(animate_interval);
+						showImage = false;
+					}
+				}
+				if(showImage){
+					$.fn.jsPsych.showImage($this, trial.stims[animate_frame], 'animate');
+				}
+			}, trial.frame_time);
+			break;
+		case 2:
+			setTimeout(function(b){ b.next(); }, trial.timing[0], block);
+			break;
+	}			
 }
\ No newline at end of file
diff --git a/jspsych-samedifferent.js b/jspsych-samedifferent.js
index 63e30410..1b7f4add 100755
--- a/jspsych-samedifferent.js
+++ b/jspsych-samedifferent.js
@@ -9,6 +9,13 @@ function sd_create(params)
 		trials[i]["a_path"] = sd_stims[i][0];
 		trials[i]["b_path"] = sd_stims[i][1];
 		trials[i]["timing"] = params["timing"];
+		trials[i]["answer"] = params["answer"];
+		if(params["prompt"] != undefined){
+			trials[i]["prompt"] = params["prompt"];
+		}
+		if(params["data"]!=undefined){
+			trials[i]["data"] = params["data"][i];
+		}
 	}
 	return trials;
 }
@@ -25,27 +32,40 @@ function sd_trial($this, block, trial, part)
 			setTimeout(sd_trial, trial.timing[1], $this, block, trial, part + 1);
 			break;
 		case 3:
-			startTime = (new Date()).getTime();
 			$.fn.jsPsych.showImage($this, trial.b_path, 'sd');
+			if(trial.timing[3]!=undefined){
+				setTimeout(sd_trial, trial.timing[3], $this, block, trial, part + 1);
+			} else {
+				sd_trial($this, block, trial, part + 1);
+			}
+			break;
+		case 4:
+			if(trial.timing[3]!=undefined){
+				$('.sd').remove();
+				$this.html(trial.prompt);
+			}
+			startTime = (new Date()).getTime();
 			var resp_func = function(e) {
 				var flag = false;
 				var correct = false;
 				if(e.which=='80') // 'p' key -- different
 				{
 					flag = true;
-					if(trial.a_path!=trial.b_path) { correct = true; }
+					if(trial.answer == "different") { correct = true; }
 				} else if(e.which=='81') // 'q' key -- same
 				{
 					flag = true;
-					if(trial.a_path==trial.b_path){ correct = true; }
+					if(trial.answer == "same"){ correct = true; }
 				}
 				if(flag)
 				{
 					endTime = (new Date()).getTime();
 					rt = (endTime-startTime);
-					block.data[block.trial_idx] = {"rt": rt, "correct": correct, "a_path": trial.a_path, "b_path": trial.b_path}
+					var trial_data = {"rt": rt, "correct": correct, "a_path": trial.a_path, "b_path": trial.b_path, "key": e.which}
+					block.data[block.trial_idx] = $.extend({},trial_data,trial.data);
 					$(document).unbind('keyup',resp_func);
 					$('.sd').remove();
+					$this.html('');
 					setTimeout(function(b){b.next();}, trial.timing[2], block);
 				}
 			}
diff --git a/jspsych-text.js b/jspsych-text.js
index 8c984a18..f27e9e7b 100755
--- a/jspsych-text.js
+++ b/jspsych-text.js
@@ -6,6 +6,7 @@ function text_create(params)
 		trials[i] = {};
 		trials[i]["type"] = "text";
 		trials[i]["text"] = params.text[i];
+		trials[i]["cont_key"] = params.cont_key;
 		trials[i]["timing"] = params.timing;
 	}
 	return trials;
@@ -15,7 +16,7 @@ function text_trial($this, block, trial, part)
 {
 	$this.html(trial.text);
 	var key_listener = function(e) {
-		if(e.which=="80") // 'spacebar' 
+		if(e.which==trial.cont_key) 
 		{
 			flag = true;				
 			$(document).unbind('keyup',key_listener);
diff --git a/jspsych.js b/jspsych.js
index 25765d5f..c1d3f5da 100755
--- a/jspsych.js
+++ b/jspsych.js
@@ -105,11 +105,7 @@
 	$.fn.jsPsych.defaults = {
 		// overall experiment parameters
 		experiment_structure: [],
-		plugins: [
-				{"type": "sim",  "createFunc": similarity_create, "trialFunc": similarity_trial},
-				{"type": "sd",   "createFunc": sd_create,         "trialFunc": sd_trial},
-				{"type": "text", "createFunc": text_create,       "trialFunc": text_trial},
-				{"type": "xab",  "createFunc": xab_create,        "trialFunc": xab_trial}]
+		plugins: []
 	};
 	//
 	// useful helper functions for multiple plugins //