The East Cuyahoga County Genealogical Society has created an online burial index of all Cleveland-owned cemeteries. Approximately 70 volunteers from all over the country worked from home putting the index together after 359,000 records were imaged and placed onto CDs. About 40% of the digitized records are from the Highland Park cemetery. The others are records primarily from the west side of Cleveland.
The online records typically include not only when and where the deceased died, but also how the person died, how old they were when they died, where they lived, who the undertaker was, and the date they were buried.
You can read more about the project at http://www.rootsweb.ancestry.com/~ohcdrt/clecems/aboutproject.html while the database itself is available at http://www.rootsweb.ancestry.com/~ohcdrt/clecems/index.html