| Set the WebServerUrl value in SiteConstants based on the given site name. |
| The WebServerUrl in the SiteConstants table is set to: 'http://cas.sdss.org/'+@siteName+'/en/' e.g., 'http://cas.sdss.org/dr5/en/' when @siteName = 'dr5'. |
| name | type | length | inout | pnum |
| @siteName | varchar | 32 | input | 1 |