apply svg css to greyscale image in firefox

Avg Bid (USD)
$79 / hr
Project Budget (USD)
$2 - $8 / hr

Project Description:

i have a site here

it has a filter on the lower images for greyscale, color when hover, i have applied a svg filter for firefox, but its not working, anyone help?

Hours of work: 1 Project Duration: < 1 week Skills required:
CSS, PHP, Software Architecture
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$8 / hr
Hours: 1 hr/ week
$6 / hr
Hours: 1 hr/ week