diff --git a/static/js/mathjax-MathJax-c9db6ac/unpacked/jax/input/AsciiMath/jax.js b/static/js/mathjax-MathJax-c9db6ac/unpacked/jax/input/AsciiMath/jax.js
index c44136566c..2d0d89efe1 100644
--- a/static/js/mathjax-MathJax-c9db6ac/unpacked/jax/input/AsciiMath/jax.js
+++ b/static/js/mathjax-MathJax-c9db6ac/unpacked/jax/input/AsciiMath/jax.js
@@ -450,8 +450,9 @@ var AMsymbols = [
 {input:"QQ",  tag:"mo", output:"\u211A", tex:null, ttype:CONST},
 {input:"RR",  tag:"mo", output:"\u211D", tex:null, ttype:CONST},
 {input:"ZZ",  tag:"mo", output:"\u2124", tex:null, ttype:CONST},
-{input:"f",   tag:"mi", output:"f",      tex:null, ttype:UNARY, func:true},
-{input:"g",   tag:"mi", output:"g",      tex:null, ttype:UNARY, func:true},
+// not for edX (ichuang jun12)
+//{input:"f",   tag:"mi", output:"f",      tex:null, ttype:UNARY, func:true},
+//{input:"g",   tag:"mi", output:"g",      tex:null, ttype:UNARY, func:true},
 
 //standard functions
 {input:"lim",  tag:"mo", output:"lim", tex:null, ttype:UNDEROVER},
diff --git a/templates/mathjax_include.html b/templates/mathjax_include.html
index 7298c681ef..273efa4fa9 100644
--- a/templates/mathjax_include.html
+++ b/templates/mathjax_include.html
@@ -79,12 +79,10 @@ function DoUpdateMath(inputId) {
 }
 
   </script>
-  <%block name="headextra"/>
 
   <!-- This must appear after all mathjax-config blocks, so it is after the imports from the other templates -->
   <!-- TODO: move to settings -->
 ## <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-MML-AM_HTMLorMML-full">
 ##  <script type="text/javascript" src="/static/js/mathjax-MathJax-c9db6ac/MathJax.js?config=TeX-AMS_HTML-full"></script>
   <script type="text/javascript" src="/static/js/mathjax-MathJax-c9db6ac/MathJax.js?config=TeX-MML-AM_HTMLorMML-full"></script>
-</script>
-
+</script>
\ No newline at end of file
diff --git a/templates/problem.js b/templates/problem.js
index a8f2f999a6..6dfca68d12 100644
--- a/templates/problem.js
+++ b/templates/problem.js
@@ -2,31 +2,27 @@ function ${ id }_content_updated() {
   MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
   update_schematics();
 
-  // dynamic math display: add to jaxset for automatic rendering
+//  for (var key in codemirror_set) {
+//      codemirror_set[key].refresh();
+//  }
+
+  $('#check_${ id }').unbind('click').click(function() {
+  $("input.schematic").each(function(index,element){ element.schematic.update_value(); });
+  $(".CodeMirror").each(function(index,element){ if (element.CodeMirror.save) element.CodeMirror.save(); });
+
+  // dynamic math display: generate MathML on click
   $.each($("[id^=input_${ id }_]"), function(index,value){
       theid = value.id.replace("input_","");		// ID of the response
       if (document.getElementById("display_" + theid)){
 	  MathJax.Hub.queue.Push(function () {
 	      math = MathJax.Hub.getAllJax("display_" + theid)[0];
 	      if (math){
-		  jaxset[theid] = math;
-		  math.Text(document.getElementById(value.id).defaultValue);
-		  x = document.getElementById("input_" + theid + "_dynamath");
 		  UpdateMathML(math,theid);
 	      }
 	  });
       };
   });
 
-
-  $('#check_${ id }').unbind('click').click(function() {
-  $("input.schematic").each(function(index,element){ element.schematic.update_value(); });
-  $(".CodeMirror").each(function(index,element){ if (element.CodeMirror.save) element.CodeMirror.save(); });
-
-//  for (var key in codemirror_set) {
-//      codemirror_set[key].refresh();
-//  }
-
     var submit_data={};
     $.each($("[id^=input_${ id }_]"), function(index,value){
 	    if (value.type==="checkbox"){
diff --git a/templates/textinput_dynamath.html b/templates/textinput_dynamath.html
index 12021fe692..c50658f713 100644
--- a/templates/textinput_dynamath.html
+++ b/templates/textinput_dynamath.html
@@ -2,7 +2,7 @@
 ### version of textline.html which does dynammic math
 ###
 <section class="text-input-dynamath">
-<table><tr><td>
+<table style="display:inline; vertical-align:middle;"><tr><td>
  <input type="text" name="input_${id}" id="input_${id}" value="${value}" 
 	 % if size:
 	 size="${size}"
@@ -26,24 +26,23 @@
    </td></tr><tr><td>
       <span id="display_${id}">`{::}`</span>
     </td><td>
-      <textarea style="display:none" id="input_${id}_dynamath" name="input_${id}_dynamath">none</textarea>
+      <textarea style="display:none" id="input_${id}_dynamath" name="input_${id}_dynamath">  </textarea>
     </td></tr>
    </table>
 ##   
 ## javascript for dynamic math: add this math element to the MathJax rendering queue
 ## also adds to global jaxset js array
 ##   
-   <script>
-	  MathJax.Hub.queue.Push(function () {
+<script type="text/javascript">
+         MathJax.Hub.queue.Push(function () {
 	      math = MathJax.Hub.getAllJax("display_${id}")[0];
 	      if (math){
 		  jaxset["${id}"] = math;
-		  math.Text(document.getElementById("input_${id}_dynamath").defaultValue);    // initial render
-		  UpdateMathML(math,"${id}");	// initial MathML 
+		  math.Text(document.getElementById("input_${id}").value);
+                  // UpdateMathML(math,"${id}");
 	      }
 	  });
-  </script>
-
+</script>
   % if msg:
     <br/>
     <span class="debug">${msg|n}</span>