自分でコピペできるように、browser判別のTipsを貼っておきます。 PHPで判別 [php] function browser_class(){ $classes = ""; $agent = getenv( "HTTP_USER_AGENT" ); if(strstr($agent,"MSIE")){ $classes .= "msie "; if(strstr($agent,"MSIE 6.0")) $classes .= "ie6 lt7 lt8 lt9"; if(strstr($agent,"MSIE 7.0")) $classes .= "gt6 ie7 lt8 lt9"; if(strstr($agent,"MSIE 8.0")) $classes .= "gt6 gt7 ie8 lt9"; if(strstr($agent,"MSIE 9.0")) $classes .