function fixBack()
{
	if ($(window).width()<1100)	
	{
		$('body').css("background","url('/img/bg.jpg') 140% 0 no-repeat");
	} else
		{
			$('body').css("background","url('/img/bg.jpg') 90% 0 no-repeat");
		}
}

$(function() {
	if ($('body').attr("class")!='mainbody')
	{
		fixBack();
		$(window).resize(fixBack);
	}
});