Add .js files from Grant He's repository

There might be some extraneous .js files but this should help insure that
things work as Grant intended them to.

htdocs/js/ajax_reload.js

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+/* This is the javascript that creates the AJAX object and attaches it to the reload button*/
+/* Reference: w3schools.com, http://www.w3schools.com/ajax/ajax_examples.asp*/
+
+function ajax_Reload() {
+	var xmlhttp;
+
+	if(window.XMLHttpRequest){
+		xmlhttp = new XMLHttpRequest();
+	}
+	else{
+		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
+	}
+
+	xmlhttp.onreadystatechange=function() {
+		if (xmlhttp.readyState==4 && xmlhttp.status==200){
+			document.getElementById("problem_viewer_content").innerHTML=xmlhttp.responseText;
+		}
+	};
+
+	var tempEditFileDirectory = document.getElementById("temp_url_id").getAttribute("value");
+	alert(location.protocol+"//"+location.host+tempEditFileDirectory+"/temp_body.txt");
+	xmlhttp.open("GET", location.protocol+"//"+location.host+tempEditFileDirectory+"/temp_body.txt", true);
+	xmlhttp.send();
+}
+
+/*This method of adding to the onload event listener is taken from tabber.js, which in turn takes from http://simon.incutio.com/archive/2004/05/26/addLoadEvent*/
+
+// var oldonload; 
+
+// oldonload = window.onload;
+
+// if(typeof window.onload != "function"){
+	// window.onload = function() { document.getElementById("reload_button").onclick = ajax_Reload; };
+// }
+// else{
+	// window.onload = function() {
+		// oldonload();
+		// document.getElementById("reload_button").onclick = ajax_Reload;
+	// };
+// }

htdocs/js/classlist_handlers.js

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+/*This is the Javascript which applies some handlers to various input elements*/
+
+function classlist_add_filter_elements() {
+	var filter_select = document.getElementById("filter_select");
+	var filter_elements = document.getElementById("filter_elements");
+
+	if(filter_select.selectedIndex == 3){
+		filter_elements.style.display = "block";
+	}
+	else{
+		filter_elements.style.display = "none";
+	}
+}
+
+function classlist_add_export_elements() {
+	var export_select_target = document.getElementById("export_select_target");
+	var export_elements = document.getElementById("export_elements");
+
+	if(export_select_target.selectedIndex == 0){
+		export_elements.style.display = "block";
+	}
+	else{
+		export_elements.style.display = "none";
+	}
+}
+
+addOnLoadEvent(function() {
+		document.getElementById("filter_select").onchange = classlist_add_filter_elements;
+		classlist_add_filter_elements();
+		document.getElementById("export_select_target").onchange = classlist_add_export_elements;
+		classlist_add_export_elements();
+	});

htdocs/js/form_checker_hmwksets.js

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+/*This is the javascript which checks the forms for errors on the Hmwksets editor page.*/
+
+function check_form_hmwk_sets() {
+	var filter_text = document.getElementById("filter_text");
+	var filter_select = document.getElementById("filter_select");
+	var filter_err_msg = document.getElementById("filter_err_msg");
+	var filter_radio = document.getElementById("filter_id");
+
+	if(filter_radio.checked && filter_select.selectedIndex == 3 && filter_text.value == ""){
+		filter_err_msg.style.display = "inline";
+		return false;
+	}
+}
+
+
+addOnLoadEvent(function (){
+	document.getElementById("take_action").onclick = check_form_hmwk_sets;
+});

htdocs/js/getInputTable.js

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+/*This gets the input table for the XMLRPC call*/
+
+function getInputTable(){
+	var problem_viewer = document.getElementById("problem_viewer_form");
+	var inputElems = problem_viewer.getElementsByTagName("input");
+
+	var inputTable = new Array();
+
+	var type,name,value;
+	for(i in inputElems){
+		type = inputElems[i].getAttribute("type");
+		name = inputElems[i].getAttribute("name");
+		value = inputElems[i].getAttribute("value");
+		if(type == "submit" || type == "button" || type == "reset"){
+			continue;
+		}
+		else{
+			inputTable[name] = value;
+		}
+	}
+
+	return inputTable;
+}

htdocs/js/hmwksets_handlers.js

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+/*This contains the Javascripts for the handlers on the hmwk sets page.*/
+
+function hmwksets_add_filter_elements() {
+	var filter_select = document.getElementById("filter_select");
+	var filter_elements = document.getElementById("filter_elements");
+
+	if(filter_select.selectedIndex == 3){
+		filter_elements.style.display = "block";
+	}
+	else{
+		filter_elements.style.display = "none";
+	}
+}
+
+addOnLoadEvent(function() {
+	document.getElementById("filter_select").onchange = hmwksets_add_filter_elements;
+	hmwksets_add_filter_elements();
+});

htdocs/js/java_init.js

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+/*This is the file where the proper functions are initialized for the problem applets which use them.*/
+
+function initWW(){
+	if (typeof(initializeWWquestion) == 'function') {
+		initializeWWquestion();
+	}
+}
+
+addOnLoadEvent(initWW);