• 1. Accessing Website Source
• 2. Webpage Structure
• CSS Stylesheet
• JavaScript Functions
• 3. Sensors and Channels
• Database
• SVG Maps
• Pictures and Spectra

2. Website Structure: CSS Stylesheet

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A picture or a sample spectrum can be added for a channel by uploading the .jpg file to the "pictures" directory using

scp -p /local/file/path/H1-PEM-PICTURE.jpg albert.einstein@www-pem.ligo-wa.caltech.edu:/srv/pem/html/channelinfo/pictures

. Make sure to include -p, which ensures that the file will be editable by other users. The file is linked to the appropriate channel by its name, for example:
H2-PEM-CS_ACC_BSC8_ITMY_X.jpg and
H2-PEM-CS_ACC_BSC8_ITMY_X-spec.jpg
will show up on the page for the channel H2:PEM-CS_ACC_BSC8_ITMY_X. Note that in the file names the colon in the channel name is changed to a hyphen, since colons are not allowed in file names, and that so far only .jpg files are recognized. Once the file is uploaded and the changes are committed using

svn commit -m "comment"

it should appear in the channel description.