diff --git a/src/lab/exp2/Manual.html b/src/lab/exp2/Manual.html
index 738b958..26958d3 100755
--- a/src/lab/exp2/Manual.html
+++ b/src/lab/exp2/Manual.html
@@ -117,7 +117,7 @@ <h1 class="text-h2-lightblue">Free vibration of S.D.O.F system</h1><div class="c
 <p><br><br>
 <!-- <a href="freevib.htm" target="_blank">Go to Manual view on Free Vibration of S.D.O.F system(Click here)</a><br><br>
 </br></br></br></br> -->
-<a>Manual view on Free Vibration of S.D.O.F system is under construction</a><br><br>
+<a href="https://www.aero.iitb.ac.in/~mira/lecture1.pdf">Manual view on Free Vibration of S.D.O.F system</a><br><br>
 </br></br></br></br></p>
 </div>						</div>
 					</div>
diff --git a/src/lab/exp7/Introduction.html b/src/lab/exp7/Introduction.html
index 4c02814..8eed0fd 100755
--- a/src/lab/exp7/Introduction.html
+++ b/src/lab/exp7/Introduction.html
@@ -148,7 +148,7 @@ <h2 class="text-h2-lightblue-small" style="font-weight: bold;margin-top: 0px;">U
 				<div><a href="#" class="text-a-lightgreen" style="text-decoration: underline;" > FEEDBACK</a></div>
 				<div><a href="#" class="text-a-lightgreen" style="text-decoration: underline;" > SAKSHAT PORTAL</a></div> -->
 				<h2 class="text-h2-lightblue-small" style="font-weight: bold;margin-top: 0px;"> Contact us</h2>
-				<a href="http://feedback.vlabs.ac.in/" class="text-a-lightgreen" style="text-decoration: underline;" > Feedback</a>
+				<a href="http://209.211.220.205/feedback/feedback.html" class="text-a-lightgreen" style="text-decoration: underline;" > Feedback</a>
 				<a class="text-a-lightgreen"style="text-decoration: underline;" href="mailto:support@vlabs.ac.in">support@vlabs.ac.in</a>
 			</div>