Hi, I am Crystal. 
I tried to visualize Tophat output (BAM and BED files) together with UCSC Zebrafish refgene track chr21.bam (downloaded from  http://genome.ucsc.edu/cgi-bin/hgTables) using Visualization in Galaxy Test but nothing appeared.
 
The workflow I did was:
1) selecting Visualization > New Track Browser
2) In New Track Browser, I select Zebrafish Jul. 2010 (Zv9/danRer7) (danRer7) for Reference genome build (dbkey)
3) Click continue
4) Option > Add tracks
5) Select 3 datasets (BAM, BED from tophat output and refgene track file)  >  insert
6) Select chromosome 21
 
Nothing can be seen.
 
 
Jeremy, can I get advice on this?
 
Thanks.
 
Best regards,
Crystal