I'm a Web developer and unfortunately my client has an older mac, not sure how old but something that on old IE9 works it doesn't seem to work on that version of safari.
Is it possible to install into parallels an older os x ?
Or if you guys know another way to test older safari versions
You can legally virtualise OS X 10.7 or later in Parallels or VMware or Virtualbox.
Apple's EULA does not permit virtualisation of 10.6 or previous unless you're using OS X Server.
If your client is running anything older than that, they really, really need to be upgrading (at least upgrading their browser) as 10.6 is out of security update support, and browsing the internet with it is a liability.
I'd suggest to your client that there's not really any supported way of developing for browsers that old, that the vast majority of the Mac user base has moved on, and if
Apple are no longer supporting versions that old, it is unreasonable to continue to expect continued support from others.
If they still want you to test with say, OS X 10.6 or earlier, then I'd ask for them to supply some test hardware/software for you to validate against. If they're willing to do that, then do whatever they pay you (hourly rate) to do.
Otherwise - basically check for an earlier version of the browser and deploy static, text only content with zero CSS to it. You can't purchase new hardware that runs a platform that old, and it is not legal to virtualise it.
Your site should have a fall back for text only browsers anyway.
If that is not acceptable, then you don't want their business - you can't test, and you just know they'll complain so much that any profit you make on the job will be burned fielding support tickets.
