706c8c2b49fcbd941c9da43c1b8a950c0c33f5ba
galt
  Mon Feb 10 23:54:13 2014 -0800
now converting hgsid and hguid to strings. when the hgsid cart var or hguid cookie is not found it returns NULL instead of 0.
diff --git src/hg/hgTracks/config.c src/hg/hgTracks/config.c
index 2937214..d0726fc 100644
--- src/hg/hgTracks/config.c
+++ src/hg/hgTracks/config.c
@@ -148,31 +148,31 @@
      * confusing to the javascript submit() function.
      */
     char submitName[256];
     safef(submitName, sizeof(submitName), "%sSubmit", group->name);
     cgiMakeButtonWithMsg(submitName, "submit","Submit your selections and view them in the browser");
     hPrintf("</td></tr></table>\n");
     hPrintf("</TH></TR>\n");
 
     /* First non-CT, non-hub group gets ruler. */
     if (!showedRuler && !isHubTrack(group->name) &&
                 differentString(group->name, "user"))
 	{
         showedRuler = TRUE;
         hPrintf("<TR %sid='%s-0'>",(isOpen ? "" : "style='display: none'"), group->name);
 	hPrintf("<TD>");
-        hPrintf("<A HREF=\"%s?%s=%u&c=%s&g=%s&hgTracksConfigPage=configure\">", hgTrackUiName(),
+        hPrintf("<A HREF=\"%s?%s=%s&c=%s&g=%s&hgTracksConfigPage=configure\">", hgTrackUiName(),
                 cartSessionVarName(), cartSessionId(cart),
                 chromName, RULER_TRACK_NAME);
         hPrintf("%s</A>", RULER_TRACK_LABEL);
 	hPrintf("</TD><TD>");
 	hTvDropDownClass("ruler", rulerMode, FALSE, rulerMode ? "normalText" : "hiddenText");
 	hPrintf("</TD><TD>");
 	hPrintf("Chromosome position in bases.  (Clicks here zoom in 3x)");
 	hPrintf("</TD></TR>\n");
 	}
     /* Scan track list to determine which supertracks have visible member
      * tracks, and to insert a track in the list for the supertrack.
      * Sort tracks and supertracks together by priority */
     makeGlobalTrackHash(trackList);
     groupTrackListAddSuper(cart, group);
 
@@ -221,48 +221,48 @@
         {
         struct track *track = tr->track;
         struct trackDb *tdb = track->tdb;
 
         hPrintf("<TR %sid='%s-%d'>",(isOpen ? "" : "style='display: none;'"),
                 group->name, rowCount++);
         hPrintf("<TD NOWRAP>");
         if (tdbIsSuperTrackChild(tdb))
             /* indent members of a supertrack */
             hPrintf("&nbsp;&nbsp;&nbsp;&nbsp;");
 
         // Print an icon before the title when one is defined
         hPrintPennantIcon(tdb);
 
         if (track->hasUi)
-            hPrintf("<A TITLE='%s%s...' HREF='%s?%s=%u&g=%s&hgTracksConfigPage=configure'>",
+            hPrintf("<A TITLE='%s%s...' HREF='%s?%s=%s&g=%s&hgTracksConfigPage=configure'>",
                     tdb->parent ? "Part of super track: " : "Configure ",
                     tdb->parent ? tdb->parent->shortLabel : tdb->shortLabel,
                     hgTrackUiName(),cartSessionVarName(), cartSessionId(cart), track->track);
         hPrintf(" %s", tdb->shortLabel);
         if (tdbIsSuper(tdb))
             hPrintf("...");
         if (track->hasUi)
 	    hPrintf("</A>");
 	hPrintf("</TD><TD NOWRAP>");
         if (tdbIsSuperTrackChild(tdb))
             /* indent members of a supertrack */
             hPrintf("&nbsp;&nbsp;&nbsp;&nbsp;");
 
 	/* If track is not on this chrom print an informational
 	   message for the user. */
         if (tdbIsDownloadsOnly(tdb))    // No vis display for downloadsOnly
-            hPrintf("<A TITLE='Downloadable files...' HREF='%s?%s=%u&g=%s'>Downloads</A>",
+            hPrintf("<A TITLE='Downloadable files...' HREF='%s?%s=%s&g=%s'>Downloads</A>",
                     hgFileUiName(),cartSessionVarName(), cartSessionId(cart), tdb->track);
         else if (hTrackOnChrom(track->tdb, chromName))
 	    {
             if (tdbIsSuper(track->tdb))
                 {
                 /* supertrack dropdown is hide/show */
                 superTrackDropDown(cart, track->tdb, 1);
                 }
             else
                 {
                 /* check for option of limiting visibility to one mode */
                 hTvDropDownClassVisOnly(track->track, track->visibility,
                                         rTdbTreeCanPack(track->tdb),
                                         (track->visibility == tvHide) ? "hiddenText" : "normalText",
                                         trackDbSetting(track->tdb, "onlyVisibility"));