for line in fileinput.input(file_path, inplace=True):
            if "<!--OUT_CSS-->" in line:
                line = '<!--OUT_CSS-->\n<link href="{$tpl}/css/out.css" rel="stylesheet" type="text/css" media="all" />\n'
            sys.stdout.write(line)
            if "<!--START_CSS-->" in line:
                line = '<!--START_CSS-->\n{if 0}\n'
            sys.stdout.write(line)
            if "<!--START_CSS-->" in line:
                line = '<!--END_CSS-->\n{/if}\n'
            sys.stdout.write(line)