diff --git a/app.py b/app.py
index b1afbc5..98d0d72 100644
--- a/app.py
+++ b/app.py
@@ -1,7 +1,81 @@
+#from __future__ import print_function
 from flask import Flask, render_template, request, json
 #from flask_mysqldb import MySQL
 import studentData
 
+import httplib2
+import os
+import io
+
+from apiclient import discovery
+from apiclient.http import MediaFileUpload
+from apiclient.http import MediaIoBaseDownload
+from oauth2client import client
+from oauth2client import tools
+from oauth2client.file import Storage
+
+#The code below gives an argument passing error that needs to be fixed due to which quickstart.py first needs to be run before app.py the first time the system is started or SCOPE is changed
+"""try:
+    import argparse
+    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
+except ImportError:
+    flags = None"""
+#flags = None
+
+# If modifying these scopes, delete your previously saved credentials
+# at ~/.credentials/drive-python-quickstart.json
+SCOPES = 'https://www.googleapis.com/auth/drive'
+CLIENT_SECRET_FILE = 'client_secret.json'
+APPLICATION_NAME = 'Math Web'
+
+def get_credentials():
+    """Gets valid user credentials from storage.
+
+    If nothing has been stored, or if the stored credentials are invalid,
+    the OAuth2 flow is completed to obtain the new credentials.
+
+    Returns:
+        Credentials, the obtained credential.
+    """
+    home_dir = os.path.expanduser('~')
+    credential_dir = os.path.join(home_dir, '.credentials')
+    if not os.path.exists(credential_dir):
+        os.makedirs(credential_dir)
+    credential_path = os.path.join(credential_dir,
+                                   'drive-python-quickstart.json')
+
+    print(credential_path);
+
+    store = Storage(credential_path)
+    credentials = store.get()
+    if not credentials or credentials.invalid:
+        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
+        flow.user_agent = APPLICATION_NAME
+        if flags:
+            credentials = tools.run_flow(flow, store, flags)
+        else: # Needed only for compatibility with Python 2.6
+            credentials = tools.run(flow, store)
+        print('Storing credentials to ' + credential_path)
+    return credentials
+
+def returnFileList(parent1, parent2, parent3):
+    credentials = get_credentials()
+    http = credentials.authorize(httplib2.Http())
+    service = discovery.build('drive', 'v3', http=http)
+    parentid2 = service.files().list(q="name contains 'DAA'", pageSize=500,fields="nextPageToken, files(id, name)").execute().get('files', [])[0]['id'];
+    print parentid2
+    print "me"
+    parentid2 = "'" + parentid2 + "'"
+    results = service.files().list(q=parentid2+" in parents",pageSize = 100, fields="nextPageToken, files(id, name)").execute()
+    items = results.get('files', [])
+    if not items:
+        print('No files found.')
+    else:
+        print('Files:')
+        for item in items:
+            print('{0} ({1})'.format(item['name'], item['id']))
+        return json.dumps(items)
+
 app = Flask(__name__)
 #mysql = MySQL(app)
 
@@ -34,6 +108,13 @@ def searchQuery():
 	return "Hello "+request.form["query"];
 	#return ['query'];
 
+@app.route("/listdrivefiles", methods=["POST"])
+def listDriveFiles():
+	commandarr = request.form["commandarr"]
+	print commandarr;
+	return returnFileList("Hello", "Tata", "Bye Bye")
+
+
 @app.route("/signup")
 def signUp():
 	#conn = MySQL.connect(host="localhost", user="root", passwd="", db="mathletesdb")
@@ -60,5 +141,19 @@ def signUpFeed():
 def announcement():
 	return render_template("pages/announcements.html");
 
+@app.route("/makeannouncement", methods=["POST"])
+def makeAnnouncement():
+	heading = request.form['heading'];
+	description = request.form['description'];
+	announcefile = open("static/announcements.html");
+	initial = announcefile.read();
+	announcefile.close();
+	announcefile = open("static/announcements.html", "w");
+	prepend = "<br/><h1>"+heading+"</h1><p>"+description+"</p>";
+	final = prepend+initial;
+	announcefile.write(final);
+	announcefile.close();
+	return "Go Back (and press Ctrl+F5) to see announcement";
+
 if __name__ == "__main__":
     app.run(debug=True);
\ No newline at end of file
diff --git a/client_secret.json b/client_secret.json
new file mode 100644
index 0000000..1ff94c2
--- /dev/null
+++ b/client_secret.json
@@ -0,0 +1 @@
+{"installed":{"client_id":"927147348913-iuimukf225lkbiobne5mtmus1oq20ug2.apps.googleusercontent.com","project_id":"mathweb-2k15","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://accounts.google.com/o/oauth2/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs","client_secret":"jzaCkVEv3iUKgqFcOnNdT15Y","redirect_uris":["urn:ietf:wg:oauth:2.0:oob","http://localhost"]}}
\ No newline at end of file
diff --git a/quickstart.py b/quickstart.py
new file mode 100644
index 0000000..717bec1
--- /dev/null
+++ b/quickstart.py
@@ -0,0 +1,91 @@
+from __future__ import print_function
+import httplib2
+import os
+import io
+
+from apiclient import discovery
+from apiclient.http import MediaFileUpload
+from apiclient.http import MediaIoBaseDownload
+from oauth2client import client
+from oauth2client import tools
+from oauth2client.file import Storage
+
+try:
+    import argparse
+    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
+except ImportError:
+    flags = None
+
+# If modifying these scopes, delete your previously saved credentials
+# at ~/.credentials/drive-python-quickstart.json
+SCOPES = 'https://www.googleapis.com/auth/drive'
+CLIENT_SECRET_FILE = 'client_secret.json'
+APPLICATION_NAME = 'Math Web'
+
+
+def get_credentials():
+    """Gets valid user credentials from storage.
+
+    If nothing has been stored, or if the stored credentials are invalid,
+    the OAuth2 flow is completed to obtain the new credentials.
+
+    Returns:
+        Credentials, the obtained credential.
+    """
+    home_dir = os.path.expanduser('~')
+    credential_dir = os.path.join(home_dir, '.credentials')
+    if not os.path.exists(credential_dir):
+        os.makedirs(credential_dir)
+    credential_path = os.path.join(credential_dir,
+                                   'drive-python-quickstart.json')
+
+    print(credential_path);
+
+    store = Storage(credential_path)
+    credentials = store.get()
+    if not credentials or credentials.invalid:
+        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
+        flow.user_agent = APPLICATION_NAME
+        if flags:
+            credentials = tools.run_flow(flow, store, flags)
+        else: # Needed only for compatibility with Python 2.6
+            credentials = tools.run(flow, store)
+        print('Storing credentials to ' + credential_path)
+    return credentials
+
+def main():
+    """Shows basic usage of the Google Drive API.
+
+    Creates a Google Drive API service object and outputs the names and IDs
+    for up to 10 files.
+    """
+    credentials = get_credentials()
+    http = credentials.authorize(httplib2.Http())
+    service = discovery.build('drive', 'v3', http=http)
+
+    results = service.files().list(
+        pageSize=500,fields="nextPageToken, files(id, name)").execute()
+    items = results.get('files', [])
+    if not items:
+        print('No files found.')
+    else:
+        print('Files:')
+        for item in items:
+            print('{0} ({1})'.format(item['name'], item['id']))
+
+    """file_metadata = {'name':'photo.jpg'}    #Uploaded a photo in images folder
+    media = MediaFileUpload('files/photo.jpg', mimetype='image/jpeg')
+    file = service.files().create(body=file_metadata,media_body=media,fields='id').execute()
+    print ("File ID: %s"%file.get('id'));"""
+
+    """file_id = "0BwWAtSE3W46ZdjNDNmVHQjN0eVE";
+    request = service.files().get_media(fileId=file_id)
+    fh = io.BytesIO()
+    downloader = MediaIoBaseDownload(fh, request)
+    done = False
+    while done is False:
+        status, done = downloader.next_chunk()
+        #print ("Download %d%%.")%int(status.progress() * 100)"""
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/static/announcements.html b/static/announcements.html
new file mode 100644
index 0000000..4d41dff
--- /dev/null
+++ b/static/announcements.html
@@ -0,0 +1,12 @@
+  <br/>
+  <h1>Reporting Date</h1>
+  <p>The reporting date for all students is 16<sup>th</sup>July, 2017. Students are advised to come at the earliest so that they ensure proper settlements.</p>
+  <br/>
+  <h1>T-Shirts</h1>
+  <p>We have come up with new T-shirt design for Mathletes. You can have a look here. Orders can be placed by contacting (person_name) or through the site.</p>
+  <br/>
+  <h1>T-Shirts</h1>
+  <p>We have come up with new T-shirt design for Mathletes. You can have a look here. Orders can be placed by contacting (person_name) or through this site.</p>
+  <br/>
+  <h1>Reporting Date</h1>
+  <p>The reporting date for all students is 16<sup>th</sup>July, 2017. Students are advised to come at the earliest so that they ensure proper settlements.</p>
\ No newline at end of file
diff --git a/static/layout/scripts/announcements.js b/static/layout/scripts/announcements.js
index e69de29..ed65aa7 100644
--- a/static/layout/scripts/announcements.js
+++ b/static/layout/scripts/announcements.js
@@ -0,0 +1,14 @@
+$(document).ready(function(){
+	$("#announcebutton").click(function(){
+		$(".makeannouncement").show();
+		$(".showannouncement").hide();
+	});
+	$.ajax({
+		type:"GET",
+		url:"static/announcements.html",
+		success: function(data){
+			$(".showannouncement").prepend(data);
+		},
+		cache: false
+	});
+});
\ No newline at end of file
diff --git a/static/layout/scripts/semmaterials.js b/static/layout/scripts/semmaterials.js
index 965702d..1412956 100644
--- a/static/layout/scripts/semmaterials.js
+++ b/static/layout/scripts/semmaterials.js
@@ -28,6 +28,8 @@ $(document).ready(function(){
 	});
 
 	var buttoncontent;
+	var commandarr = ["null", "null", "null", "false"]; //An array whose JSON instance will be sent to backend to decide what specific action to be taken
+	var commandarrjson = JSON.stringify(commandarr);
 
 	$(".materialselect button").hover(function(){
 		buttoncontent = $(this).html();
@@ -43,17 +45,28 @@ $(document).ready(function(){
 					$(".level1 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 					$(".materialselect .level3").hide();
 					$(".materialselect .level2").hide();
-					$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});	
+					$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});
+					commandarr = ["null", "null", "null", "false"]; 	
+					commandarr[0] = buttoncontent;
+					commandarrjson = JSON.stringify(commandarr);
+					//send a download request
 				}
 				else if (buttoncontent=="Assignments"||buttoncontent=="Books"||buttoncontent=="Notes"||buttoncontent=="Question Papers"){
 						$(".level3 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});
+						commandarr[2] = buttoncontent; commandarr[3] = "false";
+						commandarrjson = JSON.stringify(commandarr);
+						//send a download request
 					}
 					else{
 						$(".level3 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(".level2 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});
 						$(".materialselect .level3").hide();
+						commandarr[2] = "null"; commandarr[3] = "false"; 
+						commandarr[1] = buttoncontent;
+						commandarrjson = JSON.stringify(commandarr);
+						//send a download request
 					}
 			}
 			else{
@@ -73,26 +86,49 @@ $(document).ready(function(){
 						}
 					}
 
-					/*$.ajax({
-					type:"GET",
-					url:"static/subjectlist/sem"+sublistno+".html",
+					$.ajax({
+						type:"GET",
+						url:"static/subjectlist/sem"+sublistno+".json",
 						success: function(data){
-						$(".level2").html(data);
-					}});*/
+							var sublist = JSON.parse(data);
+							var	buttonlist = document.getElementsByClassName("level2")[0].childNodes;
+							var i=0, k=sublist.length, m=buttonlist.length;
+							for (i=0; i<k; i++){
+								buttonlist[i].innerHTML = sublist[i];
+								buttonlist[i].style.display = "inline-block"
+							}
+							for (i=k; i<m; i++){
+								buttonlist[i].style.display = "none";
+							}
+					}});
 					
 					$(".materialselect .level2").show();
 					$(".materialselect .level3").hide();
+					commandarr = ["null", "null", "null", "false"]; 	
+					commandarr[0] = buttoncontent;
 					}
 				else{
 					if(buttoncontent=="Assignments"||buttoncontent=="Books"||buttoncontent=="Notes"||buttoncontent=="Question Papers"){
 						$(".level3 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});
+						commandarr[2] = buttoncontent;
+						commandarr[3] = "true";
+						commandarrjson = JSON.stringify(commandarr);
+						$.ajax({
+						type:"POST",
+						data:{'commandarr':commandarrjson},
+						url:"/listdrivefiles",
+						success: function(data){
+						alert(data);
+						}});
 					}
 					else{
 						$(".level2 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(".level3 button").css({"backgroundColor":"#562351", "borderStyle":"none", "color":"white"});
 						$(this).parent().css({"backgroundColor":"white", "border":"1px solid rgb(71,71,71)", "color":"rgb(71,71,71)"});
 						$(".materialselect .level3").show();
+						commandarr[2] = "null";
+						commandarr[1] = buttoncontent;
 					}
 				}
 			}
diff --git a/static/layout/styles/announcements.css b/static/layout/styles/announcements.css
index e69de29..7bc381b 100644
--- a/static/layout/styles/announcements.css
+++ b/static/layout/styles/announcements.css
@@ -0,0 +1,3 @@
+.makeannouncement{
+	display:none;
+}
\ No newline at end of file
diff --git a/static/subjectlist/sem1.json b/static/subjectlist/sem1.json
new file mode 100644
index 0000000..4c34565
--- /dev/null
+++ b/static/subjectlist/sem1.json
@@ -0,0 +1 @@
+["Chemistry","Electrical Eng.","English","Chemistry Lab","Mathematics I","Electrical Eng. Lab","Manufacturing Processes Lab"]
\ No newline at end of file
diff --git a/static/subjectlist/sem10.json b/static/subjectlist/sem10.json
new file mode 100644
index 0000000..d756eeb
--- /dev/null
+++ b/static/subjectlist/sem10.json
@@ -0,0 +1 @@
+["Computer Network","NTP","MLP","Topology"]
\ No newline at end of file
diff --git a/static/subjectlist/sem2.json b/static/subjectlist/sem2.json
new file mode 100644
index 0000000..7027d4f
--- /dev/null
+++ b/static/subjectlist/sem2.json
@@ -0,0 +1,7 @@
+["PDS",
+"Physics I",
+"Mathematics II",
+"Mechanics",
+"PDS Lab",
+"Physics Lab",
+"Engineering Drawing"]
\ No newline at end of file
diff --git a/static/subjectlist/sem3.json b/static/subjectlist/sem3.json
new file mode 100644
index 0000000..47d1ae5
--- /dev/null
+++ b/static/subjectlist/sem3.json
@@ -0,0 +1,6 @@
+["DAA",
+"Economics",
+"Transform Calculus",
+"PDE",
+"BS",
+"EVS"]
\ No newline at end of file
diff --git a/static/subjectlist/sem4.html b/static/subjectlist/sem4.html
index 38b0d94..200ec7d 100644
--- a/static/subjectlist/sem4.html
+++ b/static/subjectlist/sem4.html
@@ -3,4 +3,4 @@
 <button>NSOPDE</button>
 <button>Basic EC</button>
 <button>Soft Computing</button>
-<button>Rural Development</button>
+<button>Rural Development</button>
\ No newline at end of file
diff --git a/static/subjectlist/sem4.json b/static/subjectlist/sem4.json
new file mode 100644
index 0000000..747e169
--- /dev/null
+++ b/static/subjectlist/sem4.json
@@ -0,0 +1,6 @@
+["Probablity Stats",
+"Discrete",
+"NSOPDE",
+"Basic EC",
+"Soft Computing",
+"Rural Development"]
\ No newline at end of file
diff --git a/static/subjectlist/sem5.json b/static/subjectlist/sem5.json
new file mode 100644
index 0000000..413a3a6
--- /dev/null
+++ b/static/subjectlist/sem5.json
@@ -0,0 +1,6 @@
+["Computer Organisation and Architechure",
+"eltpd",
+"Linear Algebra",
+"Mathematical Methods",
+"Object Oriented Prog.",
+"Real Analysis"]
\ No newline at end of file
diff --git a/static/subjectlist/sem6.json b/static/subjectlist/sem6.json
new file mode 100644
index 0000000..6ebf067
--- /dev/null
+++ b/static/subjectlist/sem6.json
@@ -0,0 +1,6 @@
+["Advanced Numerical Tech.",
+"Measure Theory and Integration",
+"Modern Algebra",
+"OR",
+"OR Lab",
+"Switching and Finite Automata"]
\ No newline at end of file
diff --git a/static/subjectlist/sem7.json b/static/subjectlist/sem7.json
new file mode 100644
index 0000000..bfbb40f
--- /dev/null
+++ b/static/subjectlist/sem7.json
@@ -0,0 +1,5 @@
+["Fluid Mechanics",
+"Functional Analysis",
+"Queuing",
+"Regression and Time Series",
+"Systems Programming"]
\ No newline at end of file
diff --git a/static/subjectlist/sem8.json b/static/subjectlist/sem8.json
new file mode 100644
index 0000000..ad590f3
--- /dev/null
+++ b/static/subjectlist/sem8.json
@@ -0,0 +1,6 @@
+["AI",
+"DBMS",
+"EOE",
+"Integral Equations",
+"OS",
+"Stocastic Process"]
\ No newline at end of file
diff --git a/static/subjectlist/sem9.json b/static/subjectlist/sem9.json
new file mode 100644
index 0000000..585fae4
--- /dev/null
+++ b/static/subjectlist/sem9.json
@@ -0,0 +1,4 @@
+["Computational Stat.",
+"Data Analytics",
+"Graph",
+"MTP"]
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index e2778a9..0ca6c01 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -154,13 +154,8 @@ <h3 class="heading">Department of Mathematics, <br>IIT Kharagpur</h3>
     <button>10<sup>th</sup> Semester</button>
   </div>
   <br/>
-  <div class="level2">
-    <button>Subject 1</button>
-    <button>Subject 2</button>
-    <button>Subject 3</button>
-    <button>Subject 4</button>
-    <button>Subject 5</button>
-  </div>
+  <!--The three lines below are whitespace sensitive-->
+  <div class="level2"><button>Subject 1</button><button>Subject 2</button><button>Subject 3</button><button>Subject 4</button><button>Subject 5</button><button>Subject 6</button><button>Subject 7</button><button>Subject 8</button><button>Subject 9</button><button>Subject 10</button></div>
   <br/>
   <div class="level3">
     <button>Assignments</button>
diff --git a/templates/pages/announcements.html b/templates/pages/announcements.html
index 990d936..606cb78 100644
--- a/templates/pages/announcements.html
+++ b/templates/pages/announcements.html
@@ -11,6 +11,7 @@
 <title>Mathletes</title>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
+<meta http-equiv="cache-control" content="no-cache"/>
 <link rel="icon" type="image/x-icon" href="static/images/demo/favicon.ico">
 <link href="static/layout/styles/layout.css" rel="stylesheet" type="text/css" media="all" />
 <link href="static/layout/styles/announcements.css" rel="stylesheet" type="text/css" media="all" />
@@ -48,20 +49,16 @@ <h1><a href="#">Mathletes</a></h1>
     </div>
   </header>
 </div>
-<div class="wrapper">
-  <br/>
-  <h1>Reporting Date</h1>
-  <p>The reporting date for all students is 16<sup>th</sup>July, 2017. Students are advised to come at the earliest so that they ensure proper settlements.</p>
-  <br/>
-  <h1>T-Shirts</h1>
-  <p>We have come up with new T-shirt design for Mathletes. You can have a look here. Orders can be placed by contacting (person_name) or through the site.</p>
-  <br/>
-  <h1>T-Shirts</h1>
-  <p>We have come up with new T-shirt design for Mathletes. You can have a look here. Orders can be placed by contacting (person_name) or through this site.</p>
-  <br/>
-  <h1>Reporting Date</h1>
-  <p>The reporting date for all students is 16<sup>th</sup>July, 2017. Students are advised to come at the earliest so that they ensure proper settlements.</p>
-  <button>Make an announcement.</button>
+<div class="wrapper showannouncement">
+  <button id="announcebutton">Make an announcement.</button>
+</div>
+<div class="wrapper makeannouncement">
+<form method="POST" action="/makeannouncement">
+<input type="text" placeholder="Heading" name="heading" required="required"/>
+<textarea placeholder="Enter your description here" name="description" required="required">
+</textarea>
+<button>Submit</button>
+</form>
 </div>
 <script src="static/layout/scripts/jquery.min.js"></script>
 <script src="static/layout/scripts/jquery.backtotop.js"></script>