backgroundSize.js: 'cover' behaves as 'contain' on IE8(XP[virtual], jQuery1.10.1)

[youpi83]

Hi. I have an issue on IE8(XP, modernIE, jQuery 1.10.1).

I assigned as:
$(elem).css({backgroundSize: 'cover'})

but, IE8 behaved as 'background-size: contain'

Anyone has same issue and has good ideas?

• I've checked the bugfix( vhain@979bf49) and modified some lines.
• I know 'IE8 on WinXP,modrnIE' is ridiculous, but I must resolve whether I'm willing or not.