dd

@@ -194,6 +194,7 @@
 
 
   function changePdfOptions(json) {
+          jQuery(function($) {
       json = JSON.parse(json);
      
 
@@ -204,7 +205,7 @@
       var pdflist = "";
       var pdfChange = "";
       var f = 0;  
-      console.log(json[0].pheight ,json[0].pwidth); 
+    
       if(json[0].pwidth > 300){
         var  scaleImage = 300 / json[0].pwidth;
         var  imageHeight =  json[0].pheight * scaleImage;
@@ -242,16 +243,56 @@
           strVar2 += ' <div class="callout primary"><div class="row column"><h1>Welcome to Synapsus Online PDF Editor</h1>';
           strVar2 += '<p class="lead">Please make your changes or return <a href="#" onclick="location.reload();">back to the list</a></p>';
           strVar2 += ' </div></div><div id="wrapper" class="row small-up-2 medium-up-3 large-up-3">';
-          strVar2 += pdflist + '<div id="changesColumn" class="column" >' + pdfChange + '</div><div id="pdfFooter"></div></div>';
+          strVar2 += pdflist + '<div id="changesColumn" style="height:'+$("#changes").height()+';" class="column" >' + pdfChange + '</div><div id="pdfFooter"></div></div>';
 
 
 
           document.getElementById('contentArea').innerHTML = strVar2;
           document.getElementById('google_drive').innerHTML = " ";
 
-          jQuery(function($) {
+  
+console.log($("#pdfPreview").height() ,$("#changes").height());
+
+if($("#pdfPreview").height() > $("#changes").height()){
+   $('#changesColumn').css('position' ,'relative');
+var stickySidebar = $('#changesColumn');
+
+if (stickySidebar.length > 0) { 
+  var stickyHeight = stickySidebar.height(),
+      sidebarTop = stickySidebar.offset().top;
+}
 
+// on scroll move the sidebar
+$(window).scroll(function () {
+  if (stickySidebar.length > 0) { 
+    var scrollTop = $(window).scrollTop();
             
+    if (sidebarTop < scrollTop) {
+      stickySidebar.css('top', scrollTop - sidebarTop);
+
+      // stop the sticky sidebar at the footer to avoid overlapping
+      var sidebarBottom = stickySidebar.offset().top + stickyHeight,
+          stickyStop = $('#pdfPreview').offset().top + $('#pdfPreview').height();
+      if (stickyStop < sidebarBottom) {
+        var stopPosition = $('#pdfPreview').height() - stickyHeight;
+        stickySidebar.css('top', stopPosition);
+      }
+    }
+    else {
+      stickySidebar.css('top', '0');
+    } 
+  }
+});
+
+$(window).resize(function () {
+  if (stickySidebar.length > 0) { 
+    stickyHeight = stickySidebar.height();
+  }
+});
+
+}else{
+
+console.log('false');
 var stickySidebar = $('#pdfPreview');
 
 if (stickySidebar.length > 0) { 
@@ -286,6 +327,11 @@ $(window).resize(function () {
     stickyHeight = stickySidebar.height();
   }
 });
+
+}
+    
+            
+