Index: lams_tool_larsrc/src/java/org/lamsfoundation/lams/tool/rsrc/web/action/AuthoringAction.java
===================================================================
diff -u -racd1f9fc06208511d5f1af8b80b89b1566a8e0e3 -r529adc13063b7d012d49a4c7ed47a27716c76a94
--- lams_tool_larsrc/src/java/org/lamsfoundation/lams/tool/rsrc/web/action/AuthoringAction.java	(.../AuthoringAction.java)	(revision acd1f9fc06208511d5f1af8b80b89b1566a8e0e3)
+++ lams_tool_larsrc/src/java/org/lamsfoundation/lams/tool/rsrc/web/action/AuthoringAction.java	(.../AuthoringAction.java)	(revision 529adc13063b7d012d49a4c7ed47a27716c76a94)
@@ -30,6 +30,7 @@
 import java.sql.Timestamp;
 import java.util.ArrayList;
 import java.util.Date;
+import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -335,9 +336,9 @@
      */
     private ActionForward newInstruction(ActionMapping mapping, ActionForm form, HttpServletRequest request,
 	    HttpServletResponse response) {
-	int count = NumberUtils.stringToInt(request.getParameter(AuthoringAction.INSTRUCTION_ITEM_COUNT), 0);
-	List instructionList = new ArrayList(++count);
-	for (int idx = 0; idx < count; idx++) {
+    int numberOfInstructions = getNumberOfInstructionsInRequest(request);
+	List instructionList = new ArrayList(++numberOfInstructions);
+	for (int idx = 0; idx < numberOfInstructions; idx++) {
 	    String item = request.getParameter(AuthoringAction.INSTRUCTION_ITEM_DESC_PREFIX + idx);
 	    if (item == null) {
 		instructionList.add("");
@@ -360,10 +361,10 @@
      */
     private ActionForward removeInstruction(ActionMapping mapping, ActionForm form, HttpServletRequest request,
 	    HttpServletResponse response) {
-	int count = NumberUtils.stringToInt(request.getParameter(AuthoringAction.INSTRUCTION_ITEM_COUNT), 0);
+    int numberOfInstructions = getNumberOfInstructionsInRequest(request);
 	int removeIdx = NumberUtils.stringToInt(request.getParameter("removeIdx"), -1);
-	List instructionList = new ArrayList(count - 1);
-	for (int idx = 0; idx < count; idx++) {
+	List instructionList = new ArrayList(numberOfInstructions - 1);
+	for (int idx = 0; idx < numberOfInstructions; idx++) {
 	    String item = request.getParameter(AuthoringAction.INSTRUCTION_ITEM_DESC_PREFIX + idx);
 	    if (idx == removeIdx) {
 		continue;
@@ -931,6 +932,22 @@
 		return instructionList;
 
 	}
+	
+    /**
+     * Get number of instruction items in the <code>HttpRequest</code>
+     * 
+     * @param request the HttpServletRequest
+     * @return numberOfInstruction the number of instructions in the request
+     */
+	private int getNumberOfInstructionsInRequest(HttpServletRequest request) {
+		int numberOfInstructions = 0;
+		Enumeration e = request.getParameterNames();
+		while (e.hasMoreElements()){
+		    if (e.nextElement().toString().indexOf(AuthoringAction.INSTRUCTION_ITEM_DESC_PREFIX) != -1)
+			numberOfInstructions++;
+		}
+		return numberOfInstructions;
+	}
 
     /**
      * Get back relative <code>ActionForward</code> from request.
Index: lams_tool_larsrc/web/includes/javascript/rsrccommon.js
===================================================================
diff -u -rf393908c737e5401dda3b995bacb6e4c4a5e5a50 -r529adc13063b7d012d49a4c7ed47a27716c76a94
--- lams_tool_larsrc/web/includes/javascript/rsrccommon.js	(.../rsrccommon.js)	(revision f393908c737e5401dda3b995bacb6e4c4a5e5a50)
+++ lams_tool_larsrc/web/includes/javascript/rsrccommon.js	(.../rsrccommon.js)	(revision 529adc13063b7d012d49a4c7ed47a27716c76a94)
@@ -1,10 +1,10 @@
 	function showBusy(targetDiv){
 		if($(targetDiv+"_Busy") != null){
-			Element.show(targetDiv+"_Busy");
+			document.getElementById(targetDiv+"_Busy").style.display = '';
 		}
 	}
 	function hideBusy(targetDiv){
 		if($(targetDiv+"_Busy") != null){
-			Element.hide(targetDiv+"_Busy");
+			document.getElementById(targetDiv+"_Busy").style.display = 'none';
 		}				
 	}
\ No newline at end of file
Index: lams_tool_larsrc/web/includes/javascript/rsrcresourceitem.js
===================================================================
diff -u -r421ed2daedf24b156df9559874ffeb45d4d04a6a -r529adc13063b7d012d49a4c7ed47a27716c76a94
--- lams_tool_larsrc/web/includes/javascript/rsrcresourceitem.js	(.../rsrcresourceitem.js)	(revision 421ed2daedf24b156df9559874ffeb45d4d04a6a)
+++ lams_tool_larsrc/web/includes/javascript/rsrcresourceitem.js	(.../rsrcresourceitem.js)	(revision 529adc13063b7d012d49a4c7ed47a27716c76a94)
@@ -3,36 +3,17 @@
 	 */
 	var instructionTargetDiv = "instructionArea";
     var itemAttachmentTargetDiv = "itemAttachmentArea";
-// Please set these 2 variables in JSP file for using tag reason:
-//    var removeInstructionUrl = "<c:url value='/authoring/removeInstruction.do'/>";
-//    var addInstructionUrl = "<c:url value='/authoring/newInstruction.do'/>";
+    var singleInstructionHeight = 40;
+    
 	function removeInstruction(idx){
-		//var id = "instructionItem" + idx;
-		//Element.remove(id);
- 		var url= removeInstructionUrl;
-	    var reqIDVar = new Date();
-	   
-	   var param = $("instructionForm").serialize(true); // Form.serialize('instructionForm');
-	   // param('instructionItemDesc' + idx) = 
-	    param.removeIdx = idx;
-	    param.reqID = reqIDVar.getTime();
-	    
+	    var param = $("#instructionForm").serialize() + "&removeIdx="+idx;
 	    removeInstructionLoading();
-	    var myAjax = new Ajax.Updater(
-		    	instructionTargetDiv,
-		    	url,
-		    	{
-		    		method:'post',
-		    		parameters:param,
-		    		onComplete:removeInstructionComplete,
-		    		evalScripts:true,
-		    		contentType: 'application/x-www-form-urlencoded; charset=UTF-8'
-		    	}
-	    );
+	    $.get(removeInstructionUrl, param, function(xml) {
+	    	removeInstructionComplete();	
+	    	document.getElementById("instructionArea").innerHTML = xml;
+	    });
 	}
 	function removeItemAttachment(idx){
-		//var id = "instructionItem" + idx;
-		//Element.remove(id);
  		var url= removeItemAttachmentUrl;
 	    var reqIDVar = new Date();
 	    var param = "reqID="+reqIDVar.getTime();
@@ -49,21 +30,19 @@
 	    );
 	}
 	function addInstruction(){
-		var url= addInstructionUrl;
-	    var reqIDVar = new Date();
-	    var param = Form.serialize("instructionForm")+"&reqID="+reqIDVar.getTime();
+	    var param = $("#instructionForm").serialize();
 		addInstructionLoading();
-	    var myAjax = new Ajax.Updater(
-		    	instructionTargetDiv,
-		    	url,
-		    	{
-		    		method:'post',
-		    		parameters:param,
-		    		onComplete:addInstructionComplete,
-		    		evalScripts:true 
-		    	}
-	    );
+	    $.get(addInstructionUrl, param, function(xml) {
+	    	addInstructionComplete();
+	    	document.getElementById("instructionArea").innerHTML = xml;
+	    });
+	    return false;
+
 	}
+	function adjustInstructionsDisplayAreaHeight(adjustAmount){
+		var obj = window.top.document.getElementById('reourceInputArea');
+		obj.style.height=obj.contentWindow.document.body.scrollHeight+adjustAmount+'px';
+	}
 	function upItem(itemIdx){
 		if(itemIdx == 0)
 			return;
@@ -88,6 +67,7 @@
 	}
 	function removeInstructionComplete(){
 		hideBusy(instructionTargetDiv);
+		adjustInstructionsDisplayAreaHeight(-singleInstructionHeight);
 	}
 	function removeItemAttachmentLoading(){
 		showBusy(itemAttachmentTargetDiv);
@@ -100,13 +80,11 @@
 	}
 	function addInstructionComplete(){
 		hideBusy(instructionTargetDiv);
-	
+		adjustInstructionsDisplayAreaHeight(singleInstructionHeight);
 	}
 	
 	function submitResourceItem(){
-		//$("instructionList").value = Form.serialize("instructionForm");
 		document.getElementById("instructionList").value = $("#instructionForm").serialize();
-		//$("#resourceItemForm").value = $("#instructionForm").serialize();
 		$("#resourceItemForm").submit();
 		// after submit, it direct to itemlist.jsp, 
 		// then refresh "basic tab" resourcelist and close this window.
Index: lams_tool_larsrc/web/pages/authoring/parts/instructions.jsp
===================================================================
diff -u -r7011368b3f7cc34d52ce8f8640b64a9add794dd6 -r529adc13063b7d012d49a4c7ed47a27716c76a94
--- lams_tool_larsrc/web/pages/authoring/parts/instructions.jsp	(.../instructions.jsp)	(revision 7011368b3f7cc34d52ce8f8640b64a9add794dd6)
+++ lams_tool_larsrc/web/pages/authoring/parts/instructions.jsp	(.../instructions.jsp)	(revision 529adc13063b7d012d49a4c7ed47a27716c76a94)
@@ -75,7 +75,7 @@
 
 <%-- This script will adjust resource item input area height according to the new instruction item amount. --%>
 <script type="text/javascript">
-	$("instructionCount").value="${listSize}";
+	document.getElementById("instructionCount").value = "${listSize}";
 	var obj = window.top.document.getElementById('reourceInputArea');
 	obj.style.height=obj.contentWindow.document.body.scrollHeight+'px';
 </script>