diff --git a/Course.php b/Course.php
index 20f1986..ab8fb0d 100644
--- a/Course.php
+++ b/Course.php
@@ -53,6 +53,7 @@ if(!empty($_GET["url"]))
 }
 ?>
 
+
 <div class="row" style='margin-left:20px;float:left'>
     
     <?php
@@ -71,7 +72,6 @@ if(!empty($_GET["url"]))
 </div>
 
 
-
 <?php
 
 if( $_SESSION['user_type'] == "Student")
@@ -178,7 +178,6 @@ if( $_SESSION['user_type'] == "Student")
 		</div>
 
 
-
 		
 		<div id="menu2" class="container tab-pane"><br>
 
@@ -197,8 +196,6 @@ Lab_Report_ID not in (select Lab_Report_ID from lab_report_submissions where (St
 					       . ""
 					       . "ORDER by Lab_Report_ID DESC");
 
-
-
 		    if(mysqli_num_rows($result)==0)
 		    {
 			echo "You missed no lab reports in this course.";
@@ -216,9 +213,6 @@ Lab_Report_ID not in (select Lab_Report_ID from lab_report_submissions where (St
 			    $att4=$row['Attachment_link_4'];
 			    $id=$row['Lab_Report_ID'];
                             
-                            
-                            
-                            
 			    $full_link="<a href='~\..\Lab_Report_Assignments\\$att1'>$att1</a>";      
                             
 			    if($att2!=""){
@@ -301,7 +295,6 @@ Lab_Report_ID not in (select Lab_Report_ID from lab_report_submissions where (St
    <br> <span style='font-size:8pt'>Posted : $posted  Deadline :   $deadline  ($marks Marks) &nbsp; &nbsp;  $submittedx&nbsp; <span class='btn-sm btn-success' style='margin-left:50px;'><i class='fa fa-Edit-circle'></i>  Submitted </span>
 <br> Submitted files: ";
 
-
 			    $Sub_result = mysqli_query($con,"SELECT `Submission_ID`, `Submission_Date`, lab_report_submissions.Lab_Report_ID,
 lab_report_submissions.Student_id sub_std, lab_report_submissions.Course_Group_id, `Attachment1`,
 `Notes`, `Attachment2`, `Attachment3`, `Attachment4`, `Marks`, lab_report_submissions.Status, 
@@ -345,23 +338,14 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 				}
 			    }
 
-
-
-
-
 			    echo "</span></div></k>";
-
-			    
 			    
 		    }}
 		    echo "";
 		    ?>  
-		    
-		    
+
 		</div>        
-		
-		
-		
+
 		
 		<?php
 		$sqli=mysqli_query($con, "SELECT * from course_groups_table WHERE Course_Group_id=$group_id and Course_id=$course_id");
@@ -373,8 +357,7 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 		    $Group_Member4=$row['Group_Member4'];
 		}
 		?>
-		
-		
+
 		
 		<div id="menu4" class="container tab-pane"><br>
 		    <?php
@@ -396,9 +379,6 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 						. " lab_reports_table.Lab_Report_ID  in (select Lab_Report_ID from lab_report_submissions"
 						. " where  (Status='Marked' or Status='Remarking') and (Student_id=$student_id or Course_Group_id=$group_id)  and Course_ID=$course_id) ORDER by Submission_ID DESC");
 
-		    
-
-
 		    if(mysqli_num_rows($resultx)==0)
 		    {
 			echo "You have no marked submissions in this course";
@@ -433,8 +413,6 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 			
 			echo "   <k href='#'>   <div class='btn btn-default break-word' style='dislay:block; word-wrap: break-word; border: 1px solid #F0F0F0;border-left: 4px solid #03407B;'>
   $title  <b> ($marks Marks out of $Originalmarks)</b><br><small> Lecturer Feedback : $notes </small> &nbsp; $remarking   <br> Submission files :";
-			
-
 
 			$Sub_result = mysqli_query($con,"SELECT `Submission_ID`, `Submission_Date`, lab_report_submissions.Lab_Report_ID,
   lab_report_submissions.Student_id sub_std, lab_report_submissions.Course_Group_id, `Attachment1`,
@@ -472,20 +450,13 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 			    
 			}
 			}
-
-
-
-
-
-
-
+			
 		    }}
 		    echo "</div></k>";
 		    ?>  
 		    
-		    
 		</div>      
-		
+
 	    </div>
 	    
 	</div>
@@ -502,8 +473,6 @@ where Lab_Report_ID=$lab_repo_id and (lab_report_submissions.Student_id='$studen
 	    
 	    ?>
 	    
-	    
-	    
 	    <hr>
 	    <?php
 	    
@@ -531,7 +500,7 @@ course_groups_table.Course_Group_id=course_group_members_table.Course_Group_id W
 		}
 
 		# Add "delete group" button and allow only group creator to delete it
-		$extra4 = "<button onclick='delete_group($id)' class='btn btn-danger' style='height: 25px; width: 90px; 
+		$extra4 = "<button onclick='deleteGroup($id)' class='btn btn-danger' style='height: 25px; width: 90px; 
                         line-height: 10px; font-size: 10px'>DELETE GROUP</button>";
 
 		echo "<div  class='btn-default'><small> $name ($status)  $extra  $extra2  $extra3" . 
@@ -555,7 +524,7 @@ where course_group_members_table.Course_Group_id=$id");
                     
                     #Show group members + remove button next to each member except the creator of the group
                     if($flag){
-			echo "<li><small> $name-$Student_ID ($status)</small>".(($status != "Created")?"<button onclick='remove_member($Student_ID, $id)' 
+			echo "<li><small> $name-$Student_ID ($status)</small>".(($status != "Created")?"<button onclick='removeMember($Student_ID, $id)' 
                 class='btn btn-danger' style='height: 25px; width: 80px; line-height: 10px;'>remove</button>":"")."</li>";
                     }else{
 			echo "<li><small> $name-$Student_ID ($status)</small>";
@@ -563,26 +532,13 @@ where course_group_members_table.Course_Group_id=$id");
                     
 		}
                 
-                
-                
-                
-                
-                
-                
             }
 	    }
 	    ?>
 	    
-
-	    
-	    
-	    
 	</div>
 	
     </div>
-    
-
-
 
 <?php
 }
@@ -596,12 +552,8 @@ include 'Footer.php';
 <script>
 
  function createGroup() {
-     
-     
      try
      {
-         
-
          $('<form id="frm" method="get" action="Script.php"><input type="hidden" name="creategroup" value="true">\n\
  <input type="hidden" name="student_id" value="<?php echo $student_id; ?>" > Group Name  <input type="text" name="name">\n\
 <input type="hidden" name="url" value="<?php echo $url; ?>">  <input type="hidden" name="id" value="<?php echo $course_id; ?>">    </form>').dialog({
@@ -613,7 +565,7 @@ include 'Footer.php';
 	     
              $(this).dialog('close');
          },
-         'X': function () {
+         'Cancel': function () {
 	     
              $(this).dialog('close');
          }
@@ -626,14 +578,10 @@ include 'Footer.php';
 
 
 
-
  function invite(id) {
      
-     
      try
      {
-         
-
          $('<form id="frm" method="get" action="Script.php"><input type="hidden" name="groupinvite" value="true">\n\
  <input type="hidden" name="groupid" value="'+id+'" > Enter Student_ID to Invite  <input type="text" name="student_id">\n\
 <input type="hidden" name="url" value="<?php echo $url; ?>">  <input type="hidden" name="courseid" value="<?php echo $course_id; ?>">    </form>').dialog({
@@ -645,30 +593,22 @@ include 'Footer.php';
 	     
              $(this).dialog('close');
          },
-         'X': function () {
+         'Cancel': function () {
 	     
              $(this).dialog('close');
          }
 	 
      }
  });
-
      } catch(e){ alert(e); }
  }
 
 
 
-
-
-
-
-
  function accept(id,val) {
      
      try
      {
-         
-
          $('<form id="frm" method="get" action="Script.php"><input type="hidden" name="acceptinvite" value="true">\n\
  <input type="hidden" name="groupid" value="'+id+'" > \n\  <input type="hidden" name="action" value="'+val+'" > \n\
 \n\
@@ -682,14 +622,13 @@ include 'Footer.php';
 	     
              $(this).dialog('close');
          },
-         'X': function () {
+         'Cancel': function () {
 	     
              $(this).dialog('close');
          }
 	 
      }
  });
-
      } catch(e){ alert(e); }
  }
 
@@ -697,18 +636,17 @@ include 'Footer.php';
 
  function remarking(data)
  {
-     
-     var details = prompt("Please enter your remarking reasons","");
+     const details = prompt("Please enter your remarking reasons","");
      
      window.location.href = data+"&details="+details;
  }
+
+
  
- function remove_member(student_id, group_id) {
+ function removeMember(student_id, group_id) {
      
      try
      {
-         
-
          $('<form id="frm" method="get" action="Script.php"><input type="hidden" name="removemember" value="true">\n\
  <input type="hidden" name="student_id" value="'+student_id+'" > \n\
  <input type="hidden" name="group_id" value="'+group_id+'">\n\
@@ -721,23 +659,22 @@ include 'Footer.php';
 	     
              $(this).dialog('close');
          },
-         'X': function () {
+         'Cancel': function () {
 	     
              $(this).dialog('close');
          }
 	 
      }
  });
-
      } catch(e){ alert(e); }
  }
 
- function delete_group(id) {
+
+
+ function deleteGroup(id) {
      
      try
      {
-         
-
          $('<form id="frm" method="get" action="Script.php"><input type="hidden" name="deletegroup" value="true">\n\
  <input type="hidden" name="group_id" value="'+id+'" > \n\
 <input type="hidden" name="url" value="<?php echo $url; ?>"></form>').dialog({
@@ -749,16 +686,14 @@ include 'Footer.php';
 	     
              $(this).dialog('close');
          },
-         'X': function () {
+         'Cancel': function () {
 	     
              $(this).dialog('close');
          }
 	 
      }
  });
-
      } catch(e){ alert(e); }
  }
 
 </script>
-