80a3eefccdc921047ee4265ee46b552ea1e64074
braney
  Wed Feb 13 14:31:02 2019 -0800
add hgsid to the call to hgTracks when you press 'Go'

diff --git src/hg/hgCollection/hgCollection.c src/hg/hgCollection/hgCollection.c
index a3556a4..7c82266 100644
--- src/hg/hgCollection/hgCollection.c
+++ src/hg/hgCollection/hgCollection.c
@@ -531,30 +531,34 @@
 
 static void doMainPage(struct cart *cart, char *db, struct grp *groupList, struct trackDb *trackList)
 /* Print out initial HTML of control page. */
 {
 webStartGbNoBanner(cart, db, "Collections");
 webIncludeResourceFile("gb.css");
 //webIncludeResourceFile("../staticStyle/gbStatic.css");
 webIncludeResourceFile("gbStatic.css");
 webIncludeResourceFile("spectrum.min.css");
 webIncludeResourceFile("hgGtexTrackSettings.css");
 
 jsReloadOnBackButton(cart);
 
 // Write the page HTML: the application, followed by its help doc
 webIncludeFile("inc/hgCollection.html");
+
+// output the form that will take us back to hgTracks
+printf("<form id='redirectForm' action='../cgi-bin/hgTracks'><input type='hidden'  name='hgsid' value='%s'</input></form>",cartSessionId(cart));
+
 char *assembly = stringBetween("(", ")", hFreezeFromDb(db));
 if (assembly != NULL)
     jsInlineF("$('#assembly').text('%s');\n",assembly);
 printHelp();
 
 doTable(cart, db, groupList, trackList);
 
 puts("<link rel='stylesheet' href='https://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css'>");
 puts("<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css' />");
 puts("<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.1/jquery.min.js'></script>");
 puts("<script src=\"//code.jquery.com/ui/1.10.3/jquery-ui.min.js\"></script>");
 puts("<script src=\"https://cdnjs.cloudflare.com/ajax/libs/jstree/3.3.4/jstree.min.js\"></script>\n");
 jsIncludeFile("utils.js", NULL);
 jsIncludeFile("ajax.js", NULL);
 jsIncludeFile("spectrum.min.js", NULL);